KAJIKAWA, Yoshinobu |
|---|
Faculty, Department/Institute
- Faculty of Engineering Science Department of Electrical and Electronic Engineering
Academic status (qualification)
- Professor Apr. 1,2009
Position
- Dean, Faculty of Engineering Science 2022/10/1～2024/9/30
Undergraduate Degrees・University
- Kansai University Faculty of EngineeringDepartment of Electronics 1991 Graduated
Graduate Degrees・University
- Kansai University Master's Degree Program 1993 Completed
Academic Degrees
- Master of Engineering Mar. 1993 Kansai University
- Doctor of Engineering Aug. 1997 Osaka University
Homepage Address, E-mail Address
- Homepage Address：http://joho.densi.kansai-u.ac.jp/index-j.html
Research fields
| Research fields | keyword |
|---|---|
| Digital signal processing | |
| Speech processing | |
| Perception information processing/Intelligent robotics | ; |
Research topics
| research topic | Active Noise Control |
|---|---|
| Study theme state | International Joint Research |
| research duration | |
| Research Programs | |
| keyword | Active Noise Control,Noise Control,Noise Problems |
| Research field | |
| Research Topics Overview |
| research topic | Acoustic Design Support System for Micro Speakers Using Artifical Intellegence |
|---|---|
| Study theme state | Joint research within Japan |
| research duration | |
| Research Programs | |
| keyword | Micro Speakers,Artificial Intellegence,Acoustic Design |
| Research field | |
| Research Topics Overview |
| research topic | Biometrics Personal Authentication |
|---|---|
| Study theme state | Joint research within Japan |
| research duration | |
| Research Programs | Joint Research |
| keyword | Biometrics,Ear Sound Authentication,Pinna Related Transfer Function |
| Research field | |
| Research Topics Overview |
Research Activities
- Signal Processing for Acoustic Systems: Active Noise Control, 3-D Virtual Sound System, Sound Quality Improvement of Portable Audio Systems, Next-Generation Video-Chat System, Sound Quality Customization System, Acoustic Design Supporting for Portable Audio Systems
Research Career
- Fujitsu Ltd. 1993/4/1～1994年/3/31
- Faculty of Engineering, Kansai University/Research Associate 1994/4/1～1998年/3/31
- Faculty of Engineering, Kansai University / Lecturer 1998/4/1～2001年/3/31
- Faculty of Engineering, Kansai University / Associate Professor 2001/4/1～2007年/3/31
- Faculty of Engineering Science, Kansai University / Associate Professor 2007/4/1～2009年/3/31
Awards
- Young Scientist Award Apr. 16,1992(Kasai Section Joint Convention of Institutes of Electrical Engineering)
- Young Engineer Award Mar. 25,1997(The Institute of Electronics, Information and Communication Engineering)
- Awaya Prize Mar. 19,2002(Acoustical Society of Japan)
- Feb. 1,2007
- Mar. 14,2013
- Best Paper Award in 2014 IEEE APCCAS Nov. 19,2014(IEEE APCCAS)
- Sadaoki Furui Prize Paper Award Dec. 13,2017(Asia-Pacific Signal and Information Processing Association (APSIPA))
- Best Paper Award Jun. 4,2020(The Institute of Electronics, Information and Communication Engineers)
- IEICE Fellow Mar. 17,2022(Institute of Electronics, Information and Communication Engineers)
Academic Associations
| 所属学会・団体名 | 役職名 (役職在任期間) |
|---|---|
| The Institute of Electronics, Information, and Communication Engineering | Member of Technical Committee on Audio and Electroacoustics(1995/～2007/), Associate Editor of Editorial Comittee of the Transacations on IEICE(2006/～2010/), Member of Technical Comitee on Soft Processing(2001/～2003/), Secretary of Technical Committee on Engineering Acoustics(2002/～2004/), Council Member of Board(2007/～2008/), Member of Board of Student Section(2006/～2008/), Seceretary of Editorial Comittee of the Special Section(2004/～2005/), Council Member of Board of Kansai Section(2006/～2008/), Member of Technical Committee on Signal Processing(2006/6/1～2012/5/31), Member of Technical Committee on Engineering Acoustics(2006/6/1～2012/5/31), Vice Chair of Technical Committee on Signal Processing(2012/6/1～2014/5/31), Chair of Technical Committee on Signal Processing(2014/6/1～2015/5/31), Vice President of System and Signal Processing Sub-Society(2015/6/1～2016/5/31), President of System and Signal Processing Sub-Society(2016/6/1～2017/5/31), Vice President of Engineering Science Society(2016/6/1～2017/5/31), Editor-in-Chief of IEICE Trans on Fundamentals(2019/6/1～2021/5/31), Vice Chair of Technical Committee on Engineering Acoustics(2020/6/1～2021/5/31), President-Elect of Engineering Science Society(2022/6/1～2023/5/31), Chair of Technical Committee on Engineering Acoustics(2021/6/1～2022/5/31), Member of Technical Committee on Biometrics(2012/6/1～2023/5/31) |
| Acoustical Society of Japan | Kansai Section Secretary(2001/5/1～2003/4/30), Executive Chief of Young Sceintist Conference in Kansai Section(2001/5/1～2002/4/30), Regular Referee(2003/5/1), Journal of Acoustical Society Japan Associate Editor(2005/5/1～2007/4/30), Journal of Acoustical Society Japan Chief Associate Editor(2007/5/1～2009/4/30), Journal of Acoustical Society Japan Associate Editor(2009/5/1～2013/4/30), Councilor(2009/5/1～2012/), Representative(2009/5/1～2012/), Kansai Section Councilor(2010/5/1～2012/4/30), Annual Meeting Organizing Committee Member(2009/9/1～2010/10/30), Journal of Acoustical Society Japan Chief Associate Editor(2013/5/1～2017/4/30), Vice Chair of Technical Committee on Engineering Acoustics(2020/4/1～2021/3/31), Chair of Technical Committee on Engineering Acoustics(2021/4/1～2023/3/31), Vice Chair of Kansai Section(2022/5/1～2023/4/30) |
| IEEE(The Institute of Electrical and Electronics Engineers, Inc.) | Secretary of Signal Processing Society Japan Chapter(2009/1/1～2010/12/31), Member of Student Activities Committee in Kansai Section(2009/1/1～2010/12/31), Chair of Student Activities Committee in Kansai Section(2011/1/1～2014/12/31), Chair of Chapter Operations Committee in Kansai Section(2015/1/1～2018/12/31), Chair of Signal Processing Society Kansai Chapter(2015/1/1～2016/12/31), Secretary of Student Activities Committee in Japan Council(2015/1/1～2016/12/31), Vice Chair of Student Activities Committee in Japan Council(2017/1/1～2018/12/31), Chair of Student Activities Committee in Japan Council(2019/1/1～2020/12/31), Member of Student Activities Committee in Region 10(2019/1/1～2020/12/31), Member of Audio/Video System and Signal Processing Technical Committee, Consumer Technology Society(2021/1/1～2023/12/31), Member of Security and Privacy of CE Hardware and Software Systems Technical Committee, Consumer Technology Society(2021/1/1～2023/12/31), Member of Applied Signal Processing Systems Technical Committee, Signal Processing Society(2022/1/1～2024/12/31) |
| EURASIP(The European Association for Speech, Signal and Image Processing) | |
| Institute of Noise Control Engineering of Japan | Technical Committee Member of Active Control(2005/5/1～2011/4/30), Technical Committee Chair of Active Control(2011/5/1～2016/4/30) |
| APSIPA (Asia-Pacific Signal and Information Processing Association) | Editor of APSIPA News Letter(2011/1/1), Members-at-Large of Board of Governors(2016/1/1～2017/12/31), Member of Technical Committee on Speech, Language, and Audio(2015/1/1～2020/12/31), Vice President, Member Relations and Development(2018/1/1～2021/12/31), Members-at-Large of Board of Governors(2022/1/1～2024/12/31) |
| Acoustical Society of America |
Intellectual Property Rights
- (Acquired)
- Active Noise Controller application number：特願平10-003086 (Jan. 9,1998)
- application number：特開平11-202875 (Jul. 30,1999)
- application number：特許第3421676号
- (Published)
- Design Method for Acoustic Systems application number：特願2002-024852 (Jan. 31,2002)
- application number：特開平2003-228600 (Aug. 15,2003)
- (Published)
- Nonlinear Echo Canceller application number：特願2002-70868 (Mar. 14,2002)
- application number：特開平2003-274481 (Sep. 26,2003)
- (Published)
- Nonlinear Echo Canceller application number：特願2002-70869 (Mar. 14,2002)
- application number：特開平2003-273782 (Sep. 26,2003)
- (Acquired)
- application number：特願2016-216293 (Nov. 4,2016)
- application number：特開2018-072770 (May 10,2018)
- application number：特許第6623408号
- (Acquired)
- application number：特願2016-216297 (Nov. 4,2016)
- application number：特開2018-72771 (May 10,2018)
- application number：特許第6598029号
- (Published)
- application number：特願平6-65646 (Mar. 9,1994)
- application number：特開平7-248779 (Sep. 26,1995)
- (Published)
- application number：特願2017-102449 (May 24,2017)
- application number：特開2018-197965 (Dec. 13,2018)
- (Pending)
- application number：特願2018-133739 (Jul. 13,2018)
- (Pending)
- application number：特願2018-243647 (Dec. 26,2018)
- (Pending)
- application number：特願2019-094731 (May 20,2019)
- (Pending)
- application number：特願2020-008342 (Jan. 22,2020)
- (Pending)
- application number：特願2020-115461 (Jul. 3,2020)
- (Pending)
- application number：特願2020-115475 (Jul. 3,2020)
- (Pending)
- application number：特願2020-115503 (Jul. 3,2020)
- (Pending)
- application number：特願2020-115547 (Jul. 3,2020)
- (Pending)
- application number：特願2020-115623 (Jul. 3,2020)
- (Pending)
- application number：特願2020-115649 (Jul. 3,2020)
- (Pending)
- application number：特願2020-122087 (Jul. 16,2020)
- (Pending)
- application number：特願2020-134201 (Aug. 6,2020)
- (Pending)
- application number：特願2020-153725 (Sep. 14,2020)
Topics for Business-Government-Universities Joint Reserch
- Design Supporting System for Compact Acoustic Systems
- Active Noise Control
- Acoustic Echo Cancellation for Mobile Phones
- 3-D Audio Systems
- Parametric Loudspeaker
- 耳介個人認証システム
Joint Projects/Commissioned Projects
- Adaptive Digital Control
1996 - 2000 From contract research companies - Acoustic Design for Mobile Phones
1999 - 2000 From contract research companies - Acoustic Design for Mobile Phones
1997 - 2005 From contract research companies - Active Noise Control
2002 - 2004 From contract research companies - Adaptive Signal Processing Using Simultaneous Peturbation Methods
2005 - 2005 From contract research companies - Noise Reduction for Piping Machines
2005 - 2005 From contract research companies
2009 - 2009 From contract research companies
2014 - 2015 From contract research companies
2014 - 2015 From contract research companies
2008 - 2021 From contract research companies
2010 - 2016 From contract research companies
2017 - 2018 From contract research companies
2017 - 2021 From contract research companies
2017 - 2021 From contract research companies
2017 - 2020 From contract research companies
2019 - 2020 From contract research companies
Research Publications
| No. | Type of publication | Date of publication (Date of presentation) | Title | Type of research result | Jointly authored or single authored | Publisher and journal name | Volume number |
|---|---|---|---|---|---|---|---|
| 1 | Papers1 | 2023/2～2023,02,00,,, | High-Performance In-Car Microphone Array System with a Front-Rear MicrophoneArrangement | Academic Journal | Co-authored | IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences | vol. J106-A, no. 2 |
| 2 | International academic conference8 | 2022/8/23～2022,08,23,,, | Investigation of the applicability of recurrent neural networks for structural health monitor-ing in the frequency domain | Academic Journal | Co-authored | ||
| 3 | International academic conference8 | 2022/8/22～2022,08,22,,, | A Study on Improving the Robustness of Virtual Sensing Methods in ANC Systems | Academic Journal | Co-authored | ||
| 4 | International academic conference8 | 2022/5/23～2022,05,23,,, | Dual Active Noise Control with Common Sensors | Academic Journal | Co-authored | ||
| 5 | International academic conference8 | 2022/5/23～2022,05,23,,, | Phase Control of Parametric Array Loudspeaker by Optimizing Sideband Weights | Academic Journal | Co-authored | ||
| 6 | Papers1 | 2022/2～2022,02,00,,, | Multimodal Personal Ear Authentication Using Acoustic Ear Feature for Smartphone Security | Academic Journal | Co-authored | IEEE Trans. on Consumer Electronics | vol. 68, no. 1, pp. 77-84 |
| 7 | International academic conference8 | 2021/12/16～2021,12,16,,, | A Subband Active Noise Control System with Automatic Tap Assignment in Consideration of Psychoacoustic Properties | Academic Journal | Co-authored | ||
| 8 | International academic conference8 | 2021/12/16～2021,12,16,,, | Formulation of Multidimensional Frequency Characteristics of Second-Order Nonlinear IIR Filter | Academic Journal | Co-authored | ||
| 9 | International academic conference8 | 2021/12/15～2021,12,15,,, | Statistical-Mechanical Analysis of Adaptive Volterra Filter for Time-Varying Unknown System | Academic Journal | Co-authored | ||
| 10 | Papers1 | 2021/12～2021,12,00,,, | Statistical-Mechanical Analysis of Adaptive Volterra Filter with the LMS algorithm | Academic Journal | Co-authored | IEICE Trans. on Fundamentals | vol. E-104A, no. 12, pp. 1665--1674 |
| 11 | Papers1 | 2021/11～2021,11,00,,, | Fundamental Study on Sound Source Localization inside a Structure using Deep Neural Network and Computer-Aided Engineering | Academic Journal | Co-authored | Journal of Sound and Vibration, | vol. 513, 116400 |
| 12 | International academic conference8 | 2021/10/20～2021,10,20,,, | A Study on Personal Authentication System Using Pinna Related Transfer Function and Other Sensor Information | Academic Journal | Co-authored | ||
| 13 | International academic conference8 | 2021/10/15～2021,10,15,,, | Improving Robustness of Helmet ANC with Auxiliary Filter-Based Virtual Sensing for Head Rotation | Academic Journal | |||
| 14 | International academic conference8 | 2021/7/13～2021,07,13,,, | Sub-band Active Noise Control with Masking Function | Academic Journal | Co-authored | ||
| 15 | International academic conference8 | 2020/8/24～2020,08,24,,, | A Study on Subband ANC System Considering Masking for Reducing Speech Signal | Academic Journal | Co-authored | ||
| 16 | Papers1 | 2020/1～2020,01,00,,, | Feedforward Multichannel Virtual-sensing Active Control of Noise through an Aperture: Analysis of Causality and Sensor-actuator Constraints | Academic Journal | International coauthorship | The Journal of Acoustical Society of America | vol. 147, no. 1, pp. 32-48 |
| 17 | Papers1 | 2019/122019,12,00,0000,00,00 | New Sub-band Adaptive Volterra Filter for Identification of Loudspeaker | Academic Journal | Co-authored | IEICE Trans. on Fundamentals | vol. E-102A, no. 12, pp. 1946-1955 |
| 18 | Papers1 | 2019/122019,12,00,0000,00,00 | Acoustic Design Support System of Compact Enclosure for Smartphone Using Deep Neu-ral Network | Academic Journal | Co-authored | IEICE Trans. on Fundamentals | vol. E-102A, no. 12, pp. 1932-1939 |
| 19 | International academic conference8 | 2019/11/20～2019,11,20,,, | Beam Steering of Portable Parametric Array Loudspeaker | Academic Journal | International coauthorship | ||
| 20 | International academic conference8 | 2019/10/25～2019,10,25,,, | Comparison of Virtual Sensing Techniques for Broadband Feedforward Active Noise Control | Academic Journal | International coauthorship | ||
| 21 | International academic conference8 | 2019/10/18～2019,10,18,,, | Improving Robustness of Authentication System Based on Pinna Related Transfer Function | Academic Journal | Co-authored | ||
| 22 | International academic conference8 | 2019/9～2019/92019,09,00,2019,09,00 | Comparisons of Two Virtual Sensing Methods for Broadband Noise | Academic Journal | Co-authored | ||
| 23 | International academic conference8 | 2019/9～2019/92019,09,00,2019,09,00 | Effectiveness of ANC Partition with Film Speaker | Academic Journal | Co-authored | ||
| 24 | Papers1 | 2019/8～2019,08,00,,, | Multichannel feedforward active noise control system combined with noise source separa-tion by microphone arrays | Academic Journal | Co-authored | Journal of Sound and Vibration | vol. 453, pp. 151-173 |
| 25 | International academic conference8 | 2019/5～2019/52019,05,00,2019,05,00 | Selective Virtual Sensing Technique for Multi-channel Feedforward Active Noise Control Systems | International coauthorship | |||
| 26 | Papers1 | 2018/12～2018,12,00,,, | Statistical-Mechanics Approach to Theoretical Analysis of the FXLMS Algorithm | Academic Journal | Co-authored | IEICE Trans. on Fundamentals | vol. E-101, no. 12, pp. 2419-2433 |
| 27 | International academic conference8 | 2018/11/30～2018,11,30,,, | Improvement of Convergence Property on Adaptive Wiener Filter Using Stochastic Gradi-ent Adaptive Algorithm | Co-authored | |||
| 28 | International academic conference8 | 2018/11/15～2018,11,15,,, | Effectiveness of Active Noise Control System for Nonstationary Noise in Consideration of Psychoacoustic Properties | Co-authored | |||
| 29 | International academic conference8 | 2018/11/14～2018,11,14,,, | Statistical-Mechanical Analysis of the Second-Order Adaptive Volterra Filter | Co-authored | |||
| 30 | Papers1 | 2018/11～2018,11,00,,, | Multichannel Feedforward Active Noise Control System with Optimal Reference Micro-phone Selector Based on Time Difference of Arrival | Academic Journal | Co-authored | Applied Sciences | vol. 8, issue 11, pp. 1-17 |
| 31 | International academic conference8 | 2018/10/12～2018,10,12,,, | Automatic Design Support System for Compact Acoustic Devices Using Deep Neural Network | Co-authored | |||
| 32 | International academic conference8 | 2018/9/17～2018,09,17,,, | A Partial-Update Minimax Algorithm for Practical Implementation of Multi-Channel Feed-forward Active Noise Control | International coauthorship | |||
| 33 | International academic conference8 | 2018/9/3～2018,09,03,,, | Automatic Speech Translation System Selecting Target Language by Direction-of-Arrival Information | Co-authored | |||
| 34 | International academic conference8 | 2018/8/28～2018,08,28,,, | Window Active Noise Control System with Virtual Sensing Technique | Academic Journal | International coauthorship | ||
| 35 | International academic conference8 | 2018/7/11～2018,07,11,,, | Active Noise Control for Motor Bike Helmet Using Virtual Sensing | International coauthorship | |||
| 36 | Papers1 | 2018/5～2018,05,00,,, | Statistical-Mechanical Analysis of Multi-channel Active Noise Control | Academic Journal | Co-authored | Transactions of the Institute of Systems, Control and Information Engineers | vol. 30, no. 5, pp. 184-190 |
| 37 | Papers1 | 2018/4～2018,04,00,,, | Statistical-Mechanical Analysis on Adaptation Rate and Its Measures of Active Noise Control | Academic Journal | Co-authored | IEEJ Transactions on Electronics, Information and Systems | vol. 138, no. 4, pp. 369-374 |
| 38 | Papers1 | 2018/3～2018,03,00,,, | Modified Second-order Nonlinear Infinite Impulse Response (IIR) Filter for Equalizing Frequency Response and Compensating Nonlinear Distortions of Electrodynamic Loudspeaker | Academic Journal | Co-authored | Applied Acoustics | vol. 132, pp. 202-209 |
| 39 | International academic conference8 | 2017/12/13～2017,12,13,,, | Statistical-mechanical Analysis of the FXLMS Algorithm for Multiple-channel Active Noise Control | Co-authored | |||
| 40 | International academic conference8 | 2017/12/13～2017,12,13,,, | Effectiveness of Headrest ANC System with Virtual Sensing Technique for Factory Noise | Co-authored | |||
| 41 | International academic conference8 | 2017/9/16～2017,09,16,,, | A Personal Authentication System Based on Pinna Related Transfer Function | Co-authored | |||
| 42 | International academic conference8 | 2017/8/28～2017,08,28,,, | Modification of Second-order Nonlinear IIR Filter for Compensating Linear and Nonlinear Distortions of Electrodynamic Loudspeaker | Co-authored | |||
| 43 | International academic conference8 | 2017/8/27～2017,08,27,,, | Headrest Application of Multi-Channel Feedback Active Noise Control with Virtual Sens-ing Technique | Academic Journal | International coauthorship | ||
| 44 | Papers1 | 2017/8～2017,08,00,,, | On Adaptive Covariance and Spectrum Estimation of Locally Stationary Multivariate Processes | Academic Journal | International coauthorship | Automatica | vol. 82, pp. 1-12 |
| 45 | Papers1 | 2017/5～2017,05,00,,, | Compensation for Nonlinear Distortion of the Frequency Modulation Based Parametric Array Loudspeaker | Academic Journal | International coauthorship | IEEE/ACM Transactions on Audio, Speech, and Language Processing | vol. 25, issue 8, pp. 1709-1717 |
| 46 | Papers1 | 2017/2～2017,02,00,,, | Statistical-Mechanical Analysis of LMS Algorithm for Time-Varying Unknown System | Academic Journal | Co-authored | Journal of the Physical Society of Japan | vol. 86, no. 2, 024803 |
| 47 | Papers1 | 2017/1～2017,01,00,,, | Binaural Active Noise Control Using Parametric Array Loudspeakers | Academic Journal | International coauthorship | Applied Acoustics | vol. 116, pp. 170-176 |
| 48 | Book2 | 2017～2017,00,00,,, | Active Noise Control, New Ed. | Monograph | Co-author | ||
| 49 | International academic conference8 | 2016/12/13～2016,12,13,,, | Online Secondary-Path-Modeling ANC System with Simultaneous Perturbation Method | Co-author | |||
| 50 | International academic conference8 | 2016/12/13～2016,12,13,,, | Active Noise Control Systems with Simplified Period Aware Linear Prediction Method for MR Noise | Co-author | |||
| 51 | International academic conference8 | 2016/12/1～2016,12,01,,, | An Improved Filter Employing Measured Characteristics of Diaphragm Displacement for Compensating Loudspeaker Nonlinearity | Co-author | |||
| 52 | International academic conference8 | 2016/12/1～2016,12,01,,, | Modified 2nd-Order Nonlinear Infinite Impulse Response (IIR) Filter for Compensating Sharpness and Nonlinear Distortions of Electrodynamic Loudspeaker | Co-author | |||
| 53 | International academic conference8 | 2016/12/1～2016,12,01,,, | Virtual Sensing Technique for Feedforward Active Noise Control | International coauthorship | |||
| 54 | Papers1 | 2016/11～2016,11,00,,, | Effect of the Ultrasonic Emitter on the Distortion Performance of the Parametric Array Loudspeaker | Academic Journal | International coauthorship | Applied Acoustics | vol. 112, pp. 108-115 |
| 55 | Papers1 | 2016/11～2016,11,00,,, | Volterra Model of the Parametric Array Loudspeaker Operating at Ultrasonic Frequencies | Academic Journal | International coauthorship | Journal of the Acoustical Society of America | vol. 140, no. 5, pp. 3463-3650 |
| 56 | International academic conference8 | 2016/9/15～2016,09,15,,, | Directional Feedforward ANC System with Virtual Sensing Technique | Academic Journal | International coauthorship | ||
| 57 | International academic conference8 | 2016/9/15～2016,09,15,,, | FPGA Implementation for Feedforward Active Noise Control with Oversampling Technique | Co-author | |||
| 58 | International academic conference8 | 2016/9～2016,09,00,,, | Theoretical Analysis of LMS Algorithm for Time-Varying Unknown System | Co-author | EI-P-37 | ||
| 59 | International academic conference8 | 2016/9～2016,09,00,,, | Statistical-Mechanical Analysis of Adaptation Rate of the FXLMS Algorithm | Co-author | EI-P-41 | ||
| 60 | International academic conference8 | 2016/9～2016,09,00,,, | Analysis of the FXLMS Algorithm for Multi-Channel Active Noise Control | Co-author | EI-P-42 | ||
| 61 | International academic conference8 | 2016/9～2016,09,00,,, | A Study on 3D Sound Field Analysis for Parametric Array Loudspeaker | Co-author | EI-P-46 | ||
| 62 | International academic conference8 | 2016/9～2016,09,00,,, | A New Filter Structure for Compensating Loudspeaker Nonlinerity | Co-author | EI-P-47 | ||
| 63 | International academic conference8 | 2016/9～2016,09,00,,, | Personal Authentication System Using Pinna Related Transfer Function with Deep Neural Network | Co-author | EI-P-48 | ||
| 64 | International academic conference8 | 2016/9～2016,09,00,,, | Active Noise Control Systems with Simplified Period Aware Linear Prediction Method for MR Noise | Co-author | EI-P-49 | ||
| 65 | International academic conference8 | 2016/9～2016,09,00,,, | Online Secondary-Path-Modeling ANC with Simultaneous Perturbation Method | Co-author | EI-P-50 | ||
| 66 | International academic conference8 | 2016/8/30～2016,08,30,,, | Integrated Direct Sub-band Adaptive Volterra Filter and Its Application to Identification of Loudspeaker Nonlinearity | Co-author | |||
| 67 | International academic conference8 | 2016/3/25～2016,03,25,,, | Automatic Gain Control for Parametric Array Loudspeakers | Academic Journal | International coauthorship | ||
| 68 | International academic conference8 | 2016/3/25～2016,03,25,,, | Synthesis of Volterra Filters for the Parametric Array Loudspeaker | Academic Journal | International coauthorship | ||
| 69 | International academic conference8 | 2016/3/25～2016,03,25,,, | On Adaptive Selection of Estimation Bandwidth for Analysis of Locally Stationary Mul-tivariate Processes | Academic Journal | International coauthorship | ||
| 70 | Commentary9 | 2016/2/1～2016,02,01,,, | Active Noise Control in Three Dimensional Space | Academic Journal | Co-author | Journal of Acoustical Society of Japan | vol. 72, no. 2, pp. 87-92 |
| 71 | International academic conference8 | 2015/12/19～2015,12,19,,, | Multi-channel Feedforward ANC System Combined with Noise Source Separation | Co-author | pp. 379-382 | ||
| 72 | International academic conference8 | 2015/12/18～2015,12,18,,, | Analysis of the FXLMS Algorithm with Norm-Constant Time-Varying Primary Path | Co-author | pp. 165-168 | ||
| 73 | International academic conference8 | 2015/12/17～2015,12,17,,, | Linearization of the Parametric Array Loudspeaker upon Varying Input Amplitudes | Academic Journal | International coauthorship | pp. 515-519 | |
| 74 | International academic conference8 | 2015/12/11～2015,12,11,,, | A Comparative Study of Preprocessing Methods in the Parametric Loudspeaker | Academic Journal | International coauthorship | ||
| 75 | International academic conference8 | 2015/12/9～2015,12,09,,, | Effect of the Narrow Acoustic Structure to the Vibrations in Micro Speaker | Co-author | pp. 151-155 | ||
| 76 | International academic conference8 | 2015/12/9～2015,12,09,,, | An Automatic Acoustic Design Method for Compact Acoustics Systems Based on the Acoustic Finite Difference Time Domain and Genetic Algorithm | Co-author | pp. 142-147 | ||
| 77 | International academic conference8 | 2015/12/8～2015,12,08,,, | A Study on Compensating for the Distortion of the Parametric Array Loudspeaker with Changing Nonlinearity | Co-author | pp. 334-337 | ||
| 78 | International academic conference8 | 2015/12/7～2015,12,07,,, | Fast Evaluation of Preprocessing Methods of the Parametric Array Loudspeaker | Co-author | pp. 369-372 | ||
| 79 | Papers1 | 2015/12～2015,12,00,,, | Generating Dual Beams from a Single Steerable Parametric Loudspeaker | Academic Journal | International coauthorship | Applied Acoustics | vol. 99, pp. 43-50 |
| 80 | International academic conference8 | 2015/9/1～2015,09,01,,, | Multi-channel ANC System Using Optimized Reference Microphones Based on Time Difference of Arrival | Co-author | |||
| 81 | International academic conference8 | 2015/9/1～2015,09,01,,, | A Linearization System for Parametric Array Loudspeakers Using the Parallel Cascade Volterra Filter | Academic Journal | International coauthorship | ||
| 82 | International academic conference8 | 2015/9～2015,09,00,,, | Active Noise Control and Its Present and Futures | Single-Author | ITE-O-13 | ||
| 83 | International academic conference8 | 2015/9～2015,09,00,,, | Personal Authentication System Using Pinna Related Transfer Function | Co-author | ITE-P-19 | ||
| 84 | International academic conference8 | 2015/9～2015,09,00,,, | A Study on 3D Sound Field Analysis for Parametric Array Loudspeaker | Co-author | ITE-O-22 | ||
| 85 | International academic conference8 | 2015/9～2015,09,00,,, | Multi-channel Feedforward ANC System Using Microphone Arrays for Noise Source Separation | Co-author | ITE-O-14 | ||
| 86 | International academic conference8 | 2015/7/22～2015,07,22,,, | Ultrasound-to-Ultrasound Volterra Filter Identification of the Parametric Array Loud-speaker | Academic Journal | International coauthorship | ||
| 87 | International academic conference8 | 2015/4/23～2015,04,23,,, | Identification of the Parametric Array Loudspeaker with a Volterra Filter Using the Sparse NLMS Algorithm | Academic Journal | International coauthorship | pp. 3372-3376 | |
| 88 | International academic conference8 | 2015/4/21～2015,04,21,,, | Statistical-Mechanical Analysis of the FXLMS Algorithm with Actual Primary Path | Co-author | pp. 3502-3506 | ||
| 89 | Academic presentation7 | 2015/3/2～2015,03,02,,, | Evaluation of Modified Amplitude Modulation Methods in the Parametric Array Loud-speaker | Co-author | vol. 114, no. 474, SIP2014-124, pp. 67-70 | ||
| 90 | Papers1 | 2015/3～2015,03,00,,, | Head-mounted Active Noise Control System with Virtual Sensing Technique | Academic Journal | Co-author | Journal of Sound and Vibration | vol. 339, pp. 65-83 |
| 91 | Papers1 | 2015/3～2015,03,00,,, | Third-order Nonlinear IIR Filter for Compensating Nonlinear Distortions of Loudspeaker Systems | Academic Journal | Co-author | IEICE Trans. on Fundamentals | vol. E98-A, no. 3, pp. 820-832 |
| 92 | Papers1 | 2015/3～2015,03,00,,, | Statistical Mechanical Analysis of Active Noise Control with Time-varying Primary Path | Academic Journal | Co-author | Transactions of the Institute of Systems, Control and Information Engineers | vol. 28, no. 5, pp. 198-204 |
| 93 | Papers1 | 2015/2～2015,02,00,,, | A Convolution Model for Computing the Far-field Directivity of a Parametric Loud-speaker Array | Academic Journal | International coauthorship | Journal of the Acoustical Society of America | vol. 137, no. 2, pp. 777-784 |
| 94 | International academic conference8 | 2014/12/11～2014,12,11,,, | Multi-channel Active Noise Control Using Parametric Array Loudspeakers | Academic Journal | International coauthorship | ||
| 95 | International academic conference8 | 2014/12/11～2014,12,11,,, | Statistical-mechanical Analysis of the FXLMS Algorithm with Time-Varying Primary Path | Co-author | |||
| 96 | International academic conference8 | 2014/12/11～2014,12,11,,, | Improved Robustness of Biometric Authentication System Using Feature of Utterance | Co-author | |||
| 97 | Papers1 | 2014/12～2014,12,00,,, | An Overview of Directivity Control Methods of the Parametric Array Loudspeaker | Academic Journal | International coauthorship | APSIPA Trans. on Signal and Information Processing | vol. 3, e20 (12 pages) |
| 98 | International academic conference8 | 2014/11/19～2014,11,19,,, | Integration of Active Noise Control and Other Acoustic Signal Processing Techniques | Single-Author | |||
| 99 | Papers1 | 2014/11～2014,11,00,,, | Parameter Estimation Method Using Volterra Kernels for Nonlinear IIR Filters | Academic Journal | Co-author | IEICE Trans. on Fundamentals | vol. E97-A, no. 11, pp. 2189-2199 |
| 100 | International academic conference8 | 2014/10/9～2014,10,09,,, | Noise Source Localization for Active Noise Control | Academic Journal | International coauthorship | ||
| 101 | International academic conference8 | 2014/10/9～2014,10,09,,, | A Study on Linearization of Nonlinear Distortions in Parametric Array Loudspeakers | Academic Journal | International coauthorship | ||
| 102 | Papers1 | 2014/10～2014,10,00,,, | Modified-Error Adaptive Feedback Active Noise Control System Using Linear Predic-tion Filter | Academic Journal | Co-author | IEICE Trans. on Fundamentals | vol. E97-A, no. 10, pp. 2021-2032 |
| 103 | International academic conference8 | 2014/9/11～2014,09,11,,, | Study on Acoustic FDTD Analysis for Compact Acoustic Systems | Co-author | |||
| 104 | International academic conference8 | 2014/9/9～2014,09,09,,, | Study on Active Noise Control System Using Parametric Array Loudspeakers | Academic Journal | International coauthorship | ||
| 105 | International academic conference8 | 2014/9/4～2014,09,04,,, | Nonlinear Distortion Reduction for Electrodynamic Loudspeaker Using Nonlinear Filtering | Co-author | |||
| 106 | International academic conference8 | 2013/9～2013,09,00,,, | Recent Applications and Challenges on Active Noise Control | Academic Journal | International coauthorship | ||
| 107 | International academic conference8 | 2013/5～2013,05,00,,, | Estimation of Nonstationary Harmonic Signals and Its Application to Active Control of MRI Noise | Academic Journal | International coauthorship | ||
| 108 | International academic conference8 | 2012/12/3～2012,12,03,,, | Reproduction of Varied Sound Image Localization for Real Source in Stereo Audio System | Academic Journal | Co-author | ||
| 109 | International academic conference8 | 2012/12/3～2012,12,03,,, | Nonlinear Signal Processing for Compensating Nonlinear Distortion of Loudspeakers | Academic Journal | Co-author | ||
| 110 | International academic conference8 | 2012/11/4～2012,11,04,,, | Multimodal Person Authentication System Using Features of Utterance | Academic Journal | Co-author | pp. 43-47 | |
| 111 | International academic conference8 | 2012/11/4～2012,11,04,,, | Improvement in Transmission Characteristics in Acoustic OFDM with Adaptive Microphone Array | Academic Journal | Co-author | ||
| 112 | Papers1 | 2012/11/1～2012,11,01,,, | Automatic Parameter Adjustment Method for Audio Equalizer Employing Interactive Genetic Algorithm | Academic Journal | Co-author | IEICE Trans. on Fundamentals | vol. E95-A, no. 11, pp. 2036-2040 |
| 113 | International academic conference8 | 2012/9/6～2012,09,06,,, | A Study on Parallel Cascade Structure for 2nd-order Volterra Kernel | Academic Journal | Co-author | pp. 61-65 | |
| 114 | Papers1 | 2012/8/28～2012,08,28,,, | [Overview Paper] Recent Advances on Active Noise Control: Open Issues and Innovative Applications | Academic Journal | International coauthorship | APSIPA Trans. on Signal and Information Processing | vol. 1, issue 1 |
| 115 | International academic conference8 | 2012/8/27～2012,08,27,,, | Linearization of Dynamic Loudspeaker System Using Third-Order Nonlinear IIR Filter | Academic Journal | Co-author | pp. 1970-1974 | |
| 116 | International academic conference8 | 2012/8/5～2012,08,05,,, | Theoretical Discussion of the Filtered-X LMS Algorithm Based on Statistical Mechanical Analysis | Academic Journal | Co-author | pp. 341-344 | |
| 117 | International academic conference8 | 2012/5/16～2012,05,16,,, | Head-Mounted Active Noise Control System and Its Application to Reducing MRI Noise | Academic Journal | Co-author | ||
| 118 | International academic conference8 | 2012/5/15～2012,05,15,,, | Third-order Nonlinear IIR Filter for Compensating Nonlinear Distortions of Loudspeaker System | Academic Journal | Co-author | ||
| 119 | Academic presentation7 | 2012/3～2012,03,00,,, | 発話に伴う特徴を用いた個人認証手法に関する検討 | Academic Journal | Co-author | ||
| 120 | International academic conference8 | 2011/12/13～2011,12,13,,, | Biometrics Authentication Method Using Lip Motion in Utterance | Academic Journal | Co-authored | ||
| 121 | International academic conference8 | 2011/12/13～2011,12,13,,, | [Invited Paper] Feedback Active Noise Control System and Its Application to MRI Noise | Academic Journal | Single-Author | ||
| 122 | International academic conference8 | 2011/10/31～2011,10,31,,, | Automatic Parameter Adjustment Method for Audio Equalizer Employing Interactive Genetic Algorithm | Academic Journal | Co-authored | ||
| 123 | International academic conference8 | 2011/10/31～2011,10,31,,, | Modified-Error Filtered-x Algorithm Employing Linear Prediction Filter | Academic Journal | Co-authored | ||
| 124 | International academic conference8 | 2011/10/31～2011,10,31,,, | Method of Improving Transmission Characteristic While Maintaining Sound Quality for Use in Acoustic OFDM | Academic Journal | Co-authored | ||
| 125 | International academic conference8 | 2011/9/6～2011,09,06,,, | Semi-adaptive Feedback Active Control of MRI Noise | Academic Journal | International coauthorship | ||
| 126 | International academic conference8 | 2011/9/6～2011,09,06,,, | Robust Feedback Active Noise Control Using Linear Prediction Filter | Academic Journal | Co-authored | ||
| 127 | Papers1 | 2011/9/1～2011,09,01,,, | Linearization Method Based on Multiple Loudspeaker Systems | Academic Journal | Single-Author | Acoustical Science and Technology | vol. 32, no 5, pp. 220-223 |
| 128 | Papers1 | 2011/8/18～2011,08,18,,, | Statistical-mechanics Approach to the Filtered-X LMS Algorithm | Academic Journal | Co-author | Electronics Letters | vol. 47, no. 17, pp. 997-999 |
| 129 | Papers1 | 2011/7/1～2011,07,01,,, | Active Noise Control System for Reducing MR Noise | Academic Journal | Co-author | IEICE Trans. on Fundamentals | vol. E94-A, no. 7, pp. 1479-1486 |
| 130 | International academic conference8 | 2011/6/27～2011,06,27,,, | Parameter Estimation Method for Closed-box Loudspeaker System | Academic Journal | Co-authored | pp. 2577-2582 | |
| 131 | International academic conference8 | 2011/6/27～2011,06,27,,, | Acoustic FDTD Analysis Considering Viscous and Advective Effect | Academic Journal | Co-author | pp. 2583-2587 | |
| 132 | International academic conference8 | 2011/5/22～2011,05,22,,, | Linearization Ability Evaluation of Nonlinear Filters Employing Dynamic Distortion Measurement | Academic Journal | Single-Author | pp. 409-412 | |
| 133 | Papers1 | 2011/2/1～2011,02,01,,, | Linearization Ability Evaluation for Loudspeaker Systems Using Dynamic Distortion Measurement | Academic Journal | Co-author | IEICE Trans. on Fundamentals | vol. 94-A, no. 2, pp. 813-816 |
| 134 | International academic conference8 | 2010/12/14～2010,12,14,,, | Active Noise Control System for MR Noise | Academic Journal | Co-author | pp. 543-548 | |
| 135 | International academic conference8 | 2010/12/14～2010,12,14,,, | Low Computational Complexity Realization for Volterra Filters | Academic Journal | Co-author | pp. 719-732 | |
| 136 | International academic conference8 | 2010/10/26～2010,10,26,,, | Sound Quality and Transmission Characteristic Improvement for Acoustic OFDM | Academic Journal | Co-author | pp. 158-161 | |
| 137 | International academic conference8 | 2010/10/26～2010,10,26,,, | Nonlinear IIR Filter Considering Nonlinearity of Self-Inductance of Loudspeaker Systems | Academic Journal | Co-author | pp. 317-320 | |
| 138 | International academic conference8 | 2010/10/26～2010,10,26,,, | A Double-Talk-Detector Using Sound and Image Information | Academic Journal | Co-author | pp. 447-450 | |
| 139 | International academic conference8 | 2010/10/26～2010,10,26,,, | Base Station Layout Support System for Indoor Visible Light Communication | Academic Journal | Co-author | pp. 661-664 | |
| 140 | International academic conference8 | 2010/8/23～2010,08,23,,, | Feedback Active Noise Control System Combining Linear Prediction Filter | Academic Journal | Co-author | pp. 31-35 | |
| 141 | International academic conference8 | 2010/8/23～2010,08,23,,, | A Study on Acoustic Theoretical Formulae for Compact Acoustic Reproduction Systems | Academic Journal | Co-author | ||
| 142 | Commentary9 | 2010/8/15～2010,08,15,,, | Active Noise Control and Its Application | Academic Journal | Single-Author | System, Control, and Information | Vol. 54, No. 8, pp. 308-313 |
| 143 | International academic conference8 | 2009/12/7～2009,12,07,,, | An Active Noise Control System Using DXHS Algorithm for MR Noise | Academic Journal | Co-author | Proc. of 2009 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2009) | pp. 69-72 |
| 144 | International academic conference8 | 2009/10/23～2009,10,23,,, | A Novel Face Authentication Method Using Trajectory Features | Academic Journal | Co-author | Proc. of 2009 International Workshop on Smart Info-Media Systems in Asia (SISA2009) | pp. 181-186 |
| 145 | International academic conference8 | 2009/10/5～2009,10,05,,, | Sound Field Reproduction System Tracking Environmental Variations with Deconvolution | Academic Journal | Co-author | Proc. of Asia-Pacific Signal and Information Processing Association 2009 Annual Summit and Conference (APSIPA2009) | pp. 226-229 |
| 146 | International academic conference8 | 2009/10/5～2009,10,05,,, | Stability Improvement of Feedback Active Noise Control System Using Linear Prediction | Academic Journal | Co-author | Proc. of Asia-Pacific Signal and Information Processing Association 2009 Annual Summit and Conference (APSIPA2009) | pp. 230-233 |
| 147 | International academic conference8 | 2009/8/25～2009,08,25,,, | A Sound Quality Customization System Using Paired Comparison | Academic Journal | Co-author | Proc. of 17th European Signal Processing Conference (EUSIPCO2009) | pp. 185-188 |
| 148 | International academic conference8 | 2009/4/19～2009,04,19,,, | Head-Mounted Active Noise Control System for MR Noise | Academic Journal | Co-author | Proc. of 2009 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2009) | pp. 245-248 |
| 149 | International academic conference8 | 2009/2/8～2009,02,08,,, | Dynamic Distortion Measurement for Linearization of Loudspeaker Systems | Academic Journal | Co-author | ||
| 150 | Papers1 | 2008/11/1～2008,11,01,,, | Proposal of a Noise Reduction Method Using DFE and Threshold-based Decision for Nondirected Non-LOS Link Optical Wireless Communications | Academic Journal | The Transactions of the Institute of Electronics, Information and Communication Engineers B | Vol. J91-A, No. 11, pp.1522-1527 | |
| 151 | International academic conference8 | 2008/10/26～2008,10,26,,, | An Active Noise Control System for MR Noise Implementation of an ANC System by Digital Signal Processor | Academic Journal | Co-author | Proc. of 9th International Conference on Signal Processing (ICSP2008) | pp. 2689-2692 |
| 152 | International academic conference8 | 2008/10/26～2008,10,26,,, | An Active Noise Control System for MR Noise: A Study on an Available ANC System in Magnetic Field | Academic Journal | Co-author | Proc. of 9th International Conference on Signal Processing (ICSP2008) | pp. 2693-2696 |
| 153 | Papers1 | 2008/10/1～2008,10,01,,, | An Estimation Method of Parameters for Closed-box Loudspeaker System | Academic Journal | Co-author | IEICE Trans. on Fundamentals | Vol. EA91-A, No. 10, pp.3006-3013 |
| 154 | International academic conference8 | 2008/8/25～2008,08,25,,, | Subband Parallel Cascade Volterra Filter for Linearization of Loudspeaker Systems | Academic Journal | Single-Author | ||
| 155 | Papers1 | 2008/4/1～2008,04,01,,, | Acoustic Echo Cancellation Using Sub-Adaptive Filter | Academic Journal | IEICE Trans. on Fundamentals | Vol. EA91-A, No. 3, pp. 801-808 | |
| 156 | Papers1 | 2008/3/1～2008,03,01,,, | Sound Field Reproduction System Using Simultaneous Perturbation Method | Academic Journal | Co-author | IEICE Trans. on Fundamentals | Vol. EA91-A, No. 3, pp. 801-808 |
| 157 | Papers1 | 2008/2/1～2008,02,01,,, | Introduction of an Updating Algorithm Considering Frequency Characteristic of Secondary Path for Active Noise Control System Using Simultaneous Perturbation Method | Academic Journal | Co-author | The Transactions of the Institute of Electronics, Information and Communication Engineers A | Vol. J91-A |
| 158 | Papers1 | 2007/12/25～2007,12,25,,, | Target Frequency Response for Design of Headphones | Academic Journal | Co-author | Journal of Acoustical Society of Japan | Vol. 64, No. 1, pp. 16-26 |
| 159 | International academic conference8 | 2007/9/4～2007,09,04,,, | A Method for Analyzing Compact Acoustic Reproduction Systems through Acoustic Equivalent Circuit | Academic Journal | Co-author | ||
| 160 | Papers1 | 2007/8/1～2007,08,01,,, | Improvement of the Stability and Cancellation Performance for ANC System Using the SP Method | Academic Journal | Co-author | IEICE Trans. on Fundamentals | Vol. EA90-A, No. 8, pp. 1555-1563 |
| 161 | Papers1 | 2007/8/1～2007,08,01,,, | Linearization of Loudspeaker Systems Using a Sub-band Parallel Cascade Volterra Filter | Academic Journal | Co-author | IEICE Trans. on Fundamentals | Vol. EA90-A, No. 8, pp. 1616-1619 |
| 162 | International academic conference8 | 2007/4/15～2007,04,15,,, | Acoustic Echo Cancellation Using Sub-Adaptive Filter | Academic Journal | Co-author | Proc. of 2007 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2007) | Vol. 1, pp. 85-88 |
| 163 | Commentary9 | 2007～2007,00,00,,, | Foreword to the special issue on acoustic technologies in robots | Academic Journal | Single-Author | The Journal of the Acoustical Society of Japan | Vol. 63, No. 1, pp. 21-22 |
| 164 | International academic conference8 | 2006/12/12～2006,12,12,,, | Realization of Nonlinear Acoustic Echo Cancellation by Subband Parallel Cascade Volterra Filter | Academic Journal | Co-author | ||
| 165 | International academic conference8 | 2006/12/12～2006,12,12,,, | Acoustic Echo Cancellation Using Sub-Adaptive Filter | Academic Journal | Co-author | ||
| 166 | Papers1 | 2006/12/1～2006,12,01,,, | Acoustic Echo Cancellation with Noise Suppressor for Updating Algorithm | Academic Journal | Co-author | IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences | Vol. J89-A, No. 12, pp. 1119-1129 |
| 167 | International academic conference8 | 2006/11/28～2006,11,28,,, | [Invited Paper] Multichannel Active Noise Control System without Secondary Path Models Using the Simultaneous Perturbation Algorithm | Academic Journal | Single-Author | 4th Joint Meeting of the Acoustical Society of America and the Acoustical Society of Japan | 4aSP4 |
| 168 | International academic conference8 | 2006/9/4～2006,09,04,,, | Sound Reproduction System with Simultaneous Perturbation Method | Academic Journal | Co-author | ||
| 169 | International academic conference8 | 2006/5/14～2006,05,14,,, | Improvement of Cancellation Performance for ANC System Using the Simultaneous Perturbation Method | Academic Journal | Co-author | Proc. of 2006 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2006) | vol. V, pp. 297-300 |
| 170 | International academic conference8 | 2005/12/13～2005,12,13,,, | A Study on Downlink Beamforming Using Block Weight in TDD/MC-CDMA | Academic Journal | Co-author | Proc. of 2005 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2005) | pp. 497-500 |
| 171 | International academic conference8 | 2005/8/28～2005,08,28,,, | Multi-Channel Active Noise Control with Freely Movable Quiet Zone | Academic Journal | Co-author | Proc. of the Eighth International Symposium on Signal Processing and Its Applications (ISSPA2005) | Vol. 2, pp. 767-770 |
| 172 | International academic conference8 | 2005/3/18～2005,03,18,,, | Multi-Channel Active Noise Control with Freely Movable Error Microphones | Academic Journal | Co-author | Proc. of 2005 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2005) | Vol. 3, pp. 149-152 |
| 173 | International academic conference8 | 2005/3/18～2005,03,18,,, | Linearization of Loudspeaker Systems Using MINT and Volterra Filters | Academic Journal | Co-author | Proc. of 2005 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2005) | Vol. 4, pp. 457-460 |
| 174 | International academic conference8 | 2004/10/26～2004,10,26,,, | Novel Motion-JPEG2000 Video Transmission System over CDMA Environment | Academic Journal | Co-author | Proc. of International Symposium on Communications and Information Technologies 2004 (ISCIT 2004) | Vol. 1, pp. 265-268 |
| 175 | International academic conference8 | 2004/9/6～2004,09,06,,, | Multi-Channel Active Noise Control System Using the Perturbation Method with Correlation Removal Filter | Academic Journal | Co-author | Proc. of XII European Signal Processing Conference (EUSIPCO 2004) | pp. 921-924 |
| 176 | International academic conference8 | 2004/8/30～2004,08,30,,, | Multi-Channel Active Noise Control without Secondary Path Models | Academic Journal | Single-Author | Proc. of IFAC Workshop on Adaptation and Learning in Control and Signal Processing (ALCOSP2004) | pp. 339-344 |
| 177 | International academic conference8 | 2004/6/20～2004,06,20,,, | An Image Transmission System in MC-DS-CDMA with Weight Control | Academic Journal | Co-author | Proc. of 2004 IEEE International Conference on Communications (ICC2004) | Vol. 5, pp. 2507-2510 |
| 178 | International academic conference8 | 2004/4/4～2004,04,04,,, | A Design of Mobile Phones Using Design Support Software for Compact Acoustic Systems | Academic Journal | Co-author | Proc. of International Congress on Acoustics (ICA2004) | Mo.P2.21 |
| 179 | International academic conference8 | 2003/12/7～2003,12,07,,, | Novel Equalization Technique for DS-CDMA System with Adaptive Antenna Array | Academic Journal | Co-author | Proc. of 2003 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2003) | pp. 291-296 |
| 180 | International academic conference8 | 2003/12/7～2003,12,07,,, | Multi-channel Active Noise Control Using the Perturbation Method | Academic Journal | Co-author | Proc. of 2003 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2003) | pp. 702-707 |
| 181 | International academic conference8 | 2003/9/8～2003,09,08,,, | Active Noise Control Using the Perturbation Method – Verification in Actual Multi-Channel System – | Academic Journal | Co-author | Proc. of Eighth International Workshop on Acoustic Echo and Noise Control (IWAENC2003) | pp. 175-178 |
| 182 | Papers1 | 2003/7/1～2003,07,01,,, | Effectiveness of the Block Length Control in the Frequency-Domain Summational Normalized Block LMS Algorithm for Adaptive Volterra Filters | Academic Journal | Co-author | Trans. of the IEICE A | Vol. J86-A, No. 7, pp. 797-800 |
| 183 | Papers1 | 2003/7/1～2003,07,01,,, | Development of a Software Tool for Eliminating Nonlinear Distortion | Academic Journal | Co-author | Acoustical Science and Technology | Vol. 24, No. 4, pp. 186-191 |
| 184 | Papers1 | 2003/6/1～2003,06,01,,, | An Automatic Design Method for Compact Acoustic Systems\\ by the Genetic Algorithm | Academic Journal | Co-author | Trans. of the IEICE A | Vol. J86-A, No. 6, pp. 611-619 |
| 185 | International academic conference8 | 2003/4/6～2003,04,06,,, | Active Noise Control without a Secondary Path Model by Using a Frequency-Domain Simultaneous Perturbation Method with Variable Perturbation | Academic Journal | Co-author | ||
| 186 | Papers1 | 2003/4/1～2003,04,01,,, | Frequency Domain Active Noise Control Systems Using The Time Difference Simultaneous Perturbation Method | Academic Journal | Co-author | IEICE Trans. on Fundamentals | Vol. EA86-A, No. 4, pp. 946-949 |
| 187 | Papers1 | 2003/4/1～2003,04,01,,, | Adaptive Volterra Filters Using Multirate Signal Processing and Their Application to Identification of Loudspeaker Systems | Academic Journal | Co-author | Trans. of the IEICE A | Vol. J86-A, No. 4, pp. 393-401 |
| 188 | Papers1 | 2003/2/1～2003,02,01,,, | An Active Noise Control System Using Frequency Domain Simultaneous Perturbation Method with a Variable Perturbation Magnitude | Academic Journal | Co-author | Trans of the IEICE A | vol. J86-A, no. 2, pp. 101-110 |
| 189 | Commentary9 | 2003/1/15～2003,01,15,,, | Voterra Filters and Their Application to Acoustical Systems | Academic Journal | Single-Author | Systems, Control, And Information | vol. 47, no. 1, pp. 26-31 |
| 190 | Papers1 | 2002/12/1～2002,12,01,,, | An Improvement of the Overall Online Modeling Method in Active Noise Control Systems | Academic Journal | Co-author | Trans. of the IEICE A | Vol. J85-A, No. 12, pp. 1478-1482 |
| 191 | International academic conference8 | 2002/11/21～2002,11,21,,, | Active Noise Control Systems Using the Frequency Domain Time Difference Simultaneous Perturbation Method | Academic Journal | Co-author | Proc. of 2002 IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2002) | pp. 197-201 |
| 192 | International academic conference8 | 2002/11/21～2002,11,21,,, | Development of a Software Tool for Eliminating Nonlinear Distortion | Academic Journal | Co-author | Proc. of 2002 IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2002) | pp. 277-281 |
| 193 | International academic conference8 | 2002/9/3～2002,09,03,,, | Linearization Technique for Stereophonic Reproduction Systems with Nonlinearity | Academic Journal | Co-author | Proc. of XI European Signal Processing Conference (EUSIPCO 2002) | Vol. 1, pp. 321-324 |
| 194 | Papers1 | 2002/1～2002,01,00,,, | Aliasing Avoidance And Reduction of Computational Complexity in Volterra Filters | Academic Journal | Co-author | Trans. of the IEICE A | Vol. J85-A, No. 1, pp. 10-16 |
| 195 | Papers1 | 2001/12～2001,12,00,,, | Frequency Domain Active Noise Control System without a Secondary Path Model via Perturbation Method | Academic Journal | Co-author | IEICE Trans. on Fundamentals | Vol. EA84-A, No. 12, pp. 3090-3098 |
| 196 | Papers1 | 2001/12～2001,12,00,,, | Music database retrieval system\\with sensitivity words using music sensitivity space | Academic Journal | Co-author | Trans. of Information Processing Society of Japan | Vol. 42, No. 12, pp. 3201-3212 |
| 197 | Papers1 | 2001/11～2001,11,00,,, | Identification of Third-order Volterra Kernels by Frequency Response Method and Its application to Loudspeaker Systems | Academic Journal | Co-author | Trans. of the IEICE A | Vol. J84-A, No. 11, pp. 1333-1345 |
| 198 | International academic conference8 | 2001/9/3～2001,09,03,,, | An Automatic Design Technique Using Genetic Algorithm for the Acoustic Component of Mobile Phones | Academic Journal | Co-author | ||
| 199 | Papers1 | 2001/7～2001,07,00,,, | Frequency-Domain Active Noise Control System Using Optimal Step Sizes | Academic Journal | Co-author | Trans. of the IEICE A | Vol. J84-A, No. 7, pp. 883-892 |
| 200 | International academic conference8 | 2001/6/3～2001,06,03,,, | Subband Adaptive Volterra Filter and Its Application to Identification of Loudspeaker Systems | Academic Journal | Co-author | ||
| 201 | International academic conference8 | 2001/6/3～2001,06,03,,, | Summational Complex NLMS Algorithm for Frequency-Domain Adaptive Volterra Filters | Academic Journal | Co-author | ||
| 202 | Papers1 | 2001/6～2001,06,00,,, | Impulse Noise Removal Technique Considering Directional Difference of Image Signal | Academic Journal | Co-author | Trans. of the IEICE A | Vol. J84-A, No. 6, pp. 759-768 |
| 203 | International academic conference8 | 2001/5/7～2001,05,07,,, | Frequency Domain Active Noise Control System Using Optimal Step-Size Parameters | Academic Journal | Co-author | Proc. of the 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2001) | Vol. 5, pp. 3217-3220 |
| 204 | International academic conference8 | 2001/5/7～2001,05,07,,, | Volterra Filters Using Multirate Signal Processing and Their Application to Loudspeaker Systems | Academic Journal | Co-author | Proc. of the 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2001) | Vol. 6, pp. 3497-3500 |
| 205 | Papers1 | 2001/1～2001,01,00,,, | Removal of Impulse Noise Using Impulse Noise Position Information by High Performance Impulse Detector | Academic Journal | Co-author | Trans. of the IEICE A | Vol. J84-A, No. 1, pp. 1-12 |
| 206 | International academic conference8 | 2000/10/20～2000,10,20,,, | High Performance Impulse Detectors and Its Application to Progressive Switching Scheme-Based Filters | Academic Journal | Co-author | Proc. of the International Workshop on Signal Processing Applications and Technology | pp. 77-80 |
| 207 | International academic conference8 | 2000/10/20～2000,10,20,,, | Identification of Third-order Volterra Kernels by Multi-sinusoidal Waves and Its Application to Loudspeaker Systems | Academic Journal | Co-author | Proc. of the International Workshop on Signal Processing Applications and Technology | pp. 147-150 |
| 208 | Papers1 | 2000/10～2000,10,00,,, | Directional Difference-Based Switching Median Filters | Academic Journal | Co-author | Trans. of the IEICE A | Vol. J83-A, No. 10, pp. 1131-1140 |
| 209 | International academic conference8 | 2000/9/4～2000,09,04,,, | Directional Difference-Based Impulse Detector and Median Filter | Academic Journal | Co-author | Proc. of X European Signal Processing Conference (EUSIPCO 2000) | TAP2-2 |
| 210 | International academic conference8 | 2000/9/4～2000,09,04,,, | Frequency Domain Active Noise Control System without Secondary Path Model | Academic Journal | Co-author | Proc. of X European Signal Processing Conference (EUSIPCO 2000) | TPP3-2 |
| 211 | International academic conference8 | 2000/9/4～2000,09,04,,, | Identification and Elimination of Second-order Nonlinear Distortion of Loudspeaker Systems Using Digital Volterra Filter | Academic Journal | Co-author | Proc. of X European Signal Processing Conference (EUSIPCO 2000) | FPP1-4 |
| 212 | International academic conference8 | 2000/5/28～2000,05,28,,, | Stable Condition Considering Modeling Error in the Filtered-x LMS Algorithm | Academic Journal | Co-author | Proc. of the 2000 IEEE International Symposium on Circuits and Systems (ISCAS2000) | Vol. 3, pp. 642-645 |
| 213 | International academic conference8 | 2000/5/28～2000,05,28,,, | Active Noise Control System without Secondary Path Model | Academic Journal | Co-author | Proc. of the 2000 IEEE International Symposium on Circuits and Systems (ISCAS2000) | Vol. 4, pp. 349-352 |
| 214 | International academic conference8 | 2000/5/28～2000,05,28,,, | Identification and Elimination of Second-order Nonlinear Distortion of Loudspeaker Systems Using Volterra Filter | Academic Journal | Co-author | Proc. of the 2000 IEEE International Symposium on Circuits and Systems (ISCAS2000) | Vol. 5, pp. 249-252 |
| 215 | Papers1 | 2000/4～2000,04,00,,, | Directional Difference Filter: Its Effectiveness in the Post-Processing of Noise Detectors | Academic Journal | Co-author | The Transactions of the Institute of Electronics, Information and Communication Engineers A | Vol. J83-A, No. 4, pp. 361-369 |
| 216 | Papers1 | 2000/3～2000,03,00,,, | Neural Filters Considering Power Variations of Input Signal | Academic Journal | Co-author | The Transactions of the Institute of Electronics, Information and Communication Engineers A | |
| 217 | Papers1 | 2000～2000,00,00,,, | Identification of Loudspeaker Systems Using Frequency Response Method | Academic Journal | Co-author | The Journal of the Acoustical Society of Japan | Vol. 56, No. 6, pp. 384-395 |
| 218 | Papers1 | 1999/7～1999,07,00,,, | A Formulation of the Convergence Property for the Second-Order Adaptive Volterra Filter Using NLMS Algorithm | Academic Journal | Co-author | The Transactions of the Institute of Electronics, Information and Communication Engineers A | |
| 219 | Papers1 | 1999/6～1999,06,00,,, | Adaptive Volterra Filter:Its Present and Future | Academic Journal | Single-Author | The Transactions of the Institute of Electronics, Information and Comunication Engineers A | |
| 220 | Papers1 | 1999/6～1999,06,00,,, | Convergece Condition of the Simultaneous Perturbation Optimization method applied to adaptive filters | Academic Journal | Co-author | The Transactions of the Institute of Electronics, Information and Communication Engineers A | |
| 221 | Papers1 | 1999/4～1999,04,00,,, | Classification of Group According to Tune's Impression Using Nonlinear Distirction Analysis in the Music Sensibility Space | Academic Journal | Co-author | Transactions of Information Processing Society of Japan | |
| 222 | Papers1 | 1999/2～1999,02,00,,, | An Active Noise Control System without Secondary Path Model | Academic Journal | Co-author | The Transactions of the Institute of Electronics, Information and Communication Engineers A | |
| 223 | Papers1 | 1999/1～1999,01,00,,, | An Online Design Method of Nonlinear Inverse System by Adaptive Volterra Filter | Academic Journal | Co-author | The Transactions of the Institute of Electronics, Information and Communication Engineers A | |
| 224 | International academic conference8 | 1998/9/8～1998,09,08,,, | The Summational Projection Algorithm for the Adaptive Volterra Filter | Academic Journal | Co-author | Proc. of IX European Signal Processing Conference (EUSIPCO’98) | Vol. 2, pp. 745-748 |
| 225 | Papers1 | 1998/6～1998,06,00,,, | An Analysis of the Convergence Property of Active Noise Control System Using Augmented Error. | Academic Journal | Co-author | The Transaction of the Institute of Electronics, Information and Communication Engineers A | |
| 226 | International academic conference8 | 1997/11/1～1997,11,01,,, | A Construction of an Automatic Piano Playing System Wearing a Performer’s Characteristic – The Generation of a Performer’s Characteristic by Musical Sensibility Space – | Academic Journal | Co-author | Proc. of 1997 Japan-China Joint Meeting on Musical Acoustics | D-5, pp. 121-124 |
| 227 | International academic conference8 | 1997/11/1～1997,11,01,,, | A Construction of an Automatic Piano Playing System Wearing a Player’s Characteristic by Neural Networks | Academic Journal | Co-author | Proc. of 1997 Japan-China Joint Meeting on Musical Acoustics | D-6, pp. 125-128 |
| 228 | Papers1 | 1997/11～1997,11,00,,, | A Derivation of the Stable Condition for the Filtered-x LMS Algorithm in the Case where C Filter has Modeling Error. | Academic Journal | Co-author | The Transactions of the Institute of Electronics, Information and Communication Engineers A | |
| 229 | International academic conference8 | 1997/9/8～1997,09,08,,, | A Design Method of a Nonlinear Inverse System by the Adaptive Volterra Filter | Academic Journal | Co-author | Proc. of 1997 IEEE Workshop on Nonlinear Signal and Image Processing | TP3-3 |
| 230 | International academic conference8 | 1997/9/8～1997,09,08,,, | An Elimination Method of the Nonlinear Distortion in Frequency Domain by the Volterra Filter | Academic Journal | Co-author | Proc. of 1997 IEEE Workshop on Nonlinear Signal and Image Processing | WP3-1 |
| 231 | Papers1 | 1997/7～1997,07,00,,, | The Convergence and Stability Conditions of the NLMS Algorithm for the Adaptive Volterra Filter. | Academic Journal | Co-author | The Transactions of the Institute of Electronic, Information and Communication Engineers A | |
| 232 | Papers1 | 1997/4～1997,04,00,,, | A Determination Method of the Sizes of Telephone-Hardset from the Corresponding Acoustic Parameters with Neural Network | Academic Journal | Co-author | The Journal of the Acoustical Society of Japan | |
| 233 | Papers1 | 1996/11～1996,11,00,,, | A Design for Nonlinear Inverse System by the Adaptive Volterra Filter | Academic Journal | Co-author | The Transactions of the Institute of Electronics, Information and Communication Engineers A | |
| 234 | Papers1 | 1996/7～1996,07,00,,, | A Consideration on Elimination of Nonlinear Distortion of the Loudspeaker System by Using Digital Volterra Fiter. | Academic Journal | Co-author | The Transactions of the Institute of Electronic,Information and Communication Engineers A | |
| 235 | Papers1 | 1996/6～1996,06,00,,, | An Automatic Design Method for the Acoustic Parameters of Telephone-Handsets Reducing the Effects of Leak by Monte Carlo Method. | Academic Journal | Co-author | IEICE Transactions on Fundamentals of Electronics,Communications and Computer Sciences. | |
| 236 | Papers1 | 1996/4～1996,04,00,,, | An Automatic Design Method for the Telephone-Handsets by the Neural Natwork. | Academic Journal | Co-author | The Transaction of The Institute of Electronics,Information and Communication Engineers A | |
| 237 | International academic conference8 | 1995/6/26～1995,06,26,,, | An Automatic Design of Telephone-Handset Suppressing an Effect of Leak. ~A Design by Nonlinear Optimization Technique.~ | Academic Journal | Co-author | 15th International Congress on Acoustics | Vol.4, pp.213-216 |
| 238 | International academic conference8 | 1995/6/26～1995,06,26,,, | An Estimation of Acoustic Parameters of Telephone-Handset by Monte Carlo Method. | Academic Journal | Co-author | 15th International Congress on Acoustics | Vol.4, pp.249-252 |
| 239 | Papers1 | 1995/5～1995,05,00,,, | Possibility of Reducing an Effect of Leak by an Automatic Design of Telephone-Handset Using Nonlinear Optimization Method. | Academic Journal | Co-author | The Journal of the Acoustical Society of Japan. | |
| 240 | Papers1 | 1995/1～1995,01,00,,, | An Estimation of Acoustic Parameters of Piezo-Electric Telephone by Monte Carlo Method. | Academic Journal | Co-author | The Transactions of the Institute of Electronics, Information and Communication Engineers A |
PapersHigh-Performance In-Car Microphone Array System with a Front-Rear MicrophoneArrangementIn refereedAcademic JournalCo-authoredM. Tsujikawa;A. Sugiyama;K. Hanazawa;Y. KajikawaIEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciencesvol. J106-A, no. 22023/2～10.14923/transfunj.2022JAP1009
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PapersStatistical-Mechanical Analysis of Adaptive Volterra Filter with the LMS algorithmIn refereedAcademic JournalCo-authoredK. Motonaka;T. Koseki;Y. Kajikawa;S. MiyoshiIEICE Trans. on Fundamentalsvol. E-104A, no. 12, pp. 1665--16742021/12～10.1587/transfun.2021EAP1013
PapersFundamental Study on Sound Source Localization inside a Structure using Deep Neural Network and Computer-Aided EngineeringIn refereedAcademic JournalCo-authoredS. Kita;Y. KajikawaJournal of Sound and Vibration,vol. 513, 1164002021/11～10.1016/j.jsv.2021.116400
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BookMonographCo-authored chapterKAJIKAWA,Yoshinobu2020/3～
PapersFeedforward Multichannel Virtual-sensing Active Control of Noise through an Aperture: Analysis of Causality and Sensor-actuator ConstraintsIn refereedAcademic JournalInternational coauthorshipD. Y. Shi;W-S. Gan;B. Lam;R. Hasegawa;Y. KajikawaThe Journal of Acoustical Society of Americavol. 147, no. 1, pp. 32-482020/1～10.1121/10.0000515
PapersNew Sub-band Adaptive Volterra Filter for Identification of LoudspeakerIn refereedAcademic JournalCo-authoredSatoshi Kinoshita;Yoshinobu KajikawaIEICE Trans. on Fundamentalsvol. E-102A, no. 12, pp. 1946-19552019/12
PapersAcoustic Design Support System of Compact Enclosure for Smartphone Using Deep Neu-ral NetworkIn refereedAcademic JournalCo-authoredSatoshi Nakamura;Kenta Iwai;Yoshinobu KajikawaIEICE Trans. on Fundamentalsvol. E-102A, no. 12, pp. 1932-19392019/12
International academic conferenceBeam Steering of Portable Parametric Array LoudspeakerIn refereedAcademic JournalInternational coauthorshipK. Nakagawa;C. Shi;Y. Kajikawa2019/11/20～Asia-Pacific Signal and Information Processing Association Annual Summit and Conference 2019 (APSIPA ASC 2019)Lanzhou, China
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International academic conferenceComparisons of Two Virtual Sensing Methods for Broadband NoiseIn refereedAcademic JournalCo-authoredR. Maeda;Y. Kajikawa2019/9～2019/923rd International Congress on Acoustics (ICA2019)Aachen, Germany
International academic conferenceEffectiveness of ANC Partition with Film SpeakerIn refereedAcademic JournalCo-authoredY. Makiyama;S. Hirose;K. Oto;Y. Komoto;Y. Kajikawa2019/9～2019/923rd International Congress on Acoustics (ICA2019)Aachen, Germany
PapersMultichannel feedforward active noise control system combined with noise source separa-tion by microphone arraysIn refereedAcademic JournalCo-authoredKenta Iwai;Satoshi Kinoshita;Yoshinobu KajikawaJournal of Sound and Vibrationvol. 453, pp. 151-1732019/8～10.1016/j.jsv.2019.04.016
International academic conferenceSelective Virtual Sensing Technique for Multi-channel Feedforward Active Noise Control SystemsIn refereedInternational coauthorshipC. Shi;R. Xie;N. Jiang;H. Li;Y. Kajikawa2019/5～2019/52019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP2019)Brighton, UK
PapersStatistical-Mechanics Approach to Theoretical Analysis of the FXLMS AlgorithmIn refereedAcademic JournalCo-authoredYoshinobu Kajikawa;Seiji MiyoshiIEICE Trans. on Fundamentalsvol. E-101, no. 12, pp. 2419-24332018/12～10.1587/transfun.E101.A.2419
International academic conferenceImprovement of Convergence Property on Adaptive Wiener Filter Using Stochastic Gradi-ent Adaptive AlgorithmIn refereedCo-authoredR. Saika;K. Iwai;Y. Kajikawa2018/11/30～2018 International Symposium on Intelligent Signal Processing and Communication Sys-tems (ISPACS 2018)Okinawa, Japan
International academic conferenceEffectiveness of Active Noise Control System for Nonstationary Noise in Consideration of Psychoacoustic PropertiesIn refereedCo-authoredR. Hasegawa;H. Yamashita;Y. Kajikawa2018/11/15～Asia-Pacific Signal and Information Processing Association Annual Summit and Confer-ence 2018 (APSIPA ASC 2018)Hawaii, USA
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PapersMultichannel Feedforward Active Noise Control System with Optimal Reference Micro-phone Selector Based on Time Difference of ArrivalIn refereedAcademic JournalCo-authoredKenta Iwai;Satoru Hase;Yoshinobu KajikawaApplied Sciencesvol. 8, issue 11, pp. 1-172018/11～10.3390/app8112291
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International academic conferenceA Partial-Update Minimax Algorithm for Practical Implementation of Multi-Channel Feed-forward Active Noise ControlIn refereedInternational coauthorshipC. Shi;Y. Kajikawa2018/9/17～2018 16th International Workshop on Acoustic Signal Enhancement (IWAENC2018)Tokyo, Japan
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PapersStatistical-Mechanical Analysis of Multi-channel Active Noise ControlIn refereedAcademic JournalCo-authoredTomoki Murata;Yoshinobu Kajikawa;Seiji MiyoshiTransactions of the Institute of Systems, Control and Information Engineersvol. 30, no. 5, pp. 184-1902018/5～10.5687/iscie.31.184
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Academic presentationCo-author2017/3/2～
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PapersStatistical-Mechanical Analysis of LMS Algorithm for Time-Varying Unknown SystemIn refereedAcademic JournalCo-authoredN. Ishibushi;Y. Kajikawa;S. MiyoshiJournal of the Physical Society of Japanvol. 86, no. 2, 0248032017/2～10.7566/JPSJ.86.024803
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BookActive Noise Control, New Ed.UnrefereedMonographCo-authorS. Nishimura;T. Usagawa;S. Ise;Y. Kajikawa2017～
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International academic conferenceActive Noise Control Systems with Simplified Period Aware Linear Prediction Method for MR NoiseCo-authorH. Sawano;Y. Kajikawa2016/12/13～Asia-Pacific Signal and Information Processing Association 2016 Annual Summit and Conference (APSIPA ASC 2016)Jeju, Korea
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Academic presentationCo-author2016/11～
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International academic conferenceDirectional Feedforward ANC System with Virtual Sensing TechniqueIn refereedAcademic JournalInternational coauthorshipS. Edamoto;C. Shi;Y. Kajikawa2016/9/15～2016 International Workshop on Smart Info-Media Systems in Asia (SISA2016)Ayutthaya, Thailand
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International academic conferenceTheoretical Analysis of LMS Algorithm for Time-Varying Unknown SystemCo-authorN. Ishibushi;K. Motonaka;Y. Kajikawa;S. Miyoshi EI-P-372016/9～The 11th International Symposium in Science and Technology 2016Osaka, Japan
International academic conferenceStatistical-Mechanical Analysis of Adaptation Rate of the FXLMS AlgorithmCo-authorK. Terauchi;K. Motonaka;Y. Kajikawa;S. MiyoshiEI-P-412016/9～The 11th International Symposium in Science and Technology 2016Osaka, Japan
International academic conferenceAnalysis of the FXLMS Algorithm for Multi-Channel Active Noise ControlCo-authorT. Murata;K. Motonaka;Y. Kajikawa;S. MiyoshiEI-P-422016/9～The 11th International Symposium in Science and Technology 2016Osaka, Japan
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International academic conferenceOnline Secondary-Path-Modeling ANC with Simultaneous Perturbation MethodCo-authorT. Shimizu;Y. KajikawaEI-P-502016/9～The 11th International Symposium in Science and Technology 2016Osaka, Japan
Academic presentationCo-author2016/9～
International academic conferenceIntegrated Direct Sub-band Adaptive Volterra Filter and Its Application to Identification of Loudspeaker NonlinearityCo-authorS. Kinoshita;Y. Kajikawa2016/8/30～24th European Signal Processing Conference (EUSIPCO2016)Budapest, Hungary
Academic presentationCo-author2016/8/26～
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International academic conferenceAutomatic Gain Control for Parametric Array LoudspeakersIn refereedAcademic JournalInternational coauthorshipC. Shi;Y. Kajikawa2016/3/25～Proc. of 2016 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2016)Shanghai, China
International academic conferenceSynthesis of Volterra Filters for the Parametric Array LoudspeakerIn refereedAcademic JournalInternational coauthorshipC. Shi;Y. Kajikawa2016/3/25～Proc. of 2016 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2016)Shanghai, China
International academic conferenceOn Adaptive Selection of Estimation Bandwidth for Analysis of Locally Stationary Mul-tivariate ProcessesIn refereedAcademic JournalInternational coauthorshipM. Niedzwiecki;M. Ciolek;Y. Kajikawa2016/3/25～Proc. of 2016 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2016)Shanghai, China
Academic presentationCo-author2016/3～
CommentaryActive Noise Control in Three Dimensional SpaceAcademic JournalCo-authorJournal of Acoustical Society of Japanvol. 72, no. 2, pp. 87-922016/2/1～
Chapter or SectionMonographSingle-Author2016～
International academic conferenceMulti-channel Feedforward ANC System Combined with Noise Source SeparationCo-authorS. Kinoshita;Y. Kajikawapp. 379-3822015/12/19～Asia-Pacific Signal and Information Processing Association 2015 Annual Summit and Conference (APSIPA ASC 2015)Hong Kong
International academic conferenceAnalysis of the FXLMS Algorithm with Norm-Constant Time-Varying Primary PathCo-authorN. Ishibushi;Y. Kajikawa;S. Miyoshipp. 165-1682015/12/18～Asia-Pacific Signal and Information Processing Association 2015 Annual Summit and Conference (APSIPA ASC 2015)Hong Kong
International academic conferenceLinearization of the Parametric Array Loudspeaker upon Varying Input AmplitudesIn refereedAcademic JournalInternational coauthorshipY. Hatano;C. Shi;S. Kinoshita;Y. Kajikawa pp. 515-5192015/12/17～Asia-Pacific Signal and Information Processing Association 2015 Annual Summit and Conference (APSIPA ASC 2015)Hong Kong
International academic conferenceA Comparative Study of Preprocessing Methods in the Parametric LoudspeakerIn refereedAcademic JournalInternational coauthorshipC. Shi;Y. Kajikawa2015/12/11～Proc. of Asia-Pacific Signal and Information Processing Association 2014 Annual Summit and Conference (APSIPA ASC 2014)Siem Reap, Cambodia
International academic conferenceEffect of the Narrow Acoustic Structure to the Vibrations in Micro SpeakerCo-authorM. Nakamura;Y. Kajikawa;T. Miyakurapp. 151-1552015/12/9～12th Western Pacific Acoustics Conference (WESPAC2015)Singapore
International academic conferenceAn Automatic Acoustic Design Method for Compact Acoustics Systems Based on the Acoustic Finite Difference Time Domain and Genetic AlgorithmCo-authorH. Takimoto;Y. Kajikawa;T. Miyakurapp. 142-1472015/12/9～12th Western Pacific Acoustics Conference (WESPAC2015)Singapore
International academic conferenceA Study on Compensating for the Distortion of the Parametric Array Loudspeaker with Changing NonlinearityCo-authorY. Hatano;C. Shi;S. Kinoshita;Y. Kajikawapp. 334-3372015/12/8～12th Western Pacific Acoustics Conference (WESPAC2015)Singapore
International academic conferenceFast Evaluation of Preprocessing Methods of the Parametric Array LoudspeakerCo-authorC. Shi;Y. Kajikawapp. 369-3722015/12/7～12th Western Pacific Acoustics Conference (WESPAC2015)Singapore
PapersGenerating Dual Beams from a Single Steerable Parametric LoudspeakerAcademic JournalInternational coauthorshipC. Shi;Y. Kajikawa;W.-S. GanApplied Acousticsvol. 99, pp. 43-502015/12～10.1016/j.apacoust.2015.05.004
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International academic conferenceMulti-channel ANC System Using Optimized Reference Microphones Based on Time Difference of ArrivalCo-authorT. Hase;Y. Kajikawa2015/9/1～23rd European Signal Processing Conference (EUSIPCO2015)Nice, France
International academic conferenceA Linearization System for Parametric Array Loudspeakers Using the Parallel Cascade Volterra FilterIn refereedAcademic JournalInternational coauthorshipY. Hatano;C. Shi;S. Kinoshita;Y. Kajikawa2015/9/1～23rd European Signal Processing Conference (EUSIPCO2015)Nice, France
International academic conferenceActive Noise Control and Its Present and FuturesSingle-AuthorY. Kajikawa ITE-O-132015/9～The 10th International Symposium in Science and Technology 2015Bangkok, Thailand
International academic conferencePersonal Authentication System Using Pinna Related Transfer FunctionCo-authorT. Miki;Y. KajikawaITE-P-192015/9～The 10th International Symposium in Science and Technology 2015Bangkok, Thailand
International academic conferenceA Study on 3D Sound Field Analysis for Parametric Array LoudspeakerCo-authorH. Bessho;Y. KajikawaITE-O-222015/9～The 10th International Symposium in Science and Technology 2015Bangkok, Thailand
International academic conferenceMulti-channel Feedforward ANC System Using Microphone Arrays for Noise Source SeparationCo-authorS. Kinoshita;Y. KajikawaITE-O-142015/9～The 10th International Symposium in Science and Technology 2015Bangkok, Thailand
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Academic presentationCo-authorC. Shi;Y. Kajikawa2015/9～
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International academic conferenceUltrasound-to-Ultrasound Volterra Filter Identification of the Parametric Array Loud-speakerIn refereedAcademic JournalInternational coauthorshipC. Shi;Y. Kajikawa2015/7/22～Proc. of 2015 IEEE International Conference on Digital Signal Processing (DSP2015)Singapore
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International academic conferenceIdentification of the Parametric Array Loudspeaker with a Volterra Filter Using the Sparse NLMS AlgorithmIn refereedAcademic JournalInternational coauthorshipC. Shi;Y. Kajikawapp. 3372-33762015/4/23～Proc. of 2015 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2015)Brisbane, Australia
International academic conferenceStatistical-Mechanical Analysis of the FXLMS Algorithm with Actual Primary PathCo-authorS. Miyoshi; Y. Kajikawapp. 3502-35062015/4/21～Proc. of 2015 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2015)Brisbane, Australia
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Academic presentationEvaluation of Modified Amplitude Modulation Methods in the Parametric Array Loud-speakerCo-authorC. Shi;Y. Kajikawavol. 114, no. 474, SIP2014-124, pp. 67-702015/3/2～IEICE Technical Report
PapersHead-mounted Active Noise Control System with Virtual Sensing TechniqueAcademic JournalCo-authorN. Miyazaki;Y. KajikawaJournal of Sound and Vibrationvol. 339, pp. 65-832015/3～10.1016/j.jsv.2014.11.023
PapersThird-order Nonlinear IIR Filter for Compensating Nonlinear Distortions of Loudspeaker SystemsAcademic JournalCo-authorK. Iwai;Y. KajikawaIEICE Trans. on Fundamentalsvol. E98-A, no. 3, pp. 820-8322015/3～
PapersStatistical Mechanical Analysis of Active Noise Control with Time-varying Primary PathAcademic JournalCo-authorTransactions of the Institute of Systems, Control and Information Engineersvol. 28, no. 5, pp. 198-2042015/3～10.5687/iscie.28.198
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PapersA Convolution Model for Computing the Far-field Directivity of a Parametric Loud-speaker ArrayAcademic JournalInternational coauthorshipC. Shi;Y. KajikawaJournal of the Acoustical Society of Americavol. 137, no. 2, pp. 777-7842015/2～10.1121/1.4906163
Academic presentationCo-author2015/1/29～
International academic conferenceMulti-channel Active Noise Control Using Parametric Array LoudspeakersIn refereedAcademic JournalInternational coauthorshipK. Tanaka;C. Shi;Y. Kajikawa2014/12/11～Proc. of Asia-Pacific Signal and Information Processing Association 2014 Annual Summit and Conference (APSIPA ASC 2014)Siem Reap, Cambodia
International academic conferenceStatistical-mechanical Analysis of the FXLMS Algorithm with Time-Varying Primary PathCo-authorN. Egawa;Y. Kajikawa;S. Miyoshi2014/12/11～Proc. of Asia-Pacific Signal and Information Processing Association 2014 Annual Summit and Conference (APSIPA ASC 2014)Siem Reap, Cambodia
International academic conferenceImproved Robustness of Biometric Authentication System Using Feature of UtteranceCo-authorQ. Shi;Y. Kajikawa2014/12/11～Proc. of Asia-Pacific Signal and Information Processing Association 2014 Annual Summit and Conference (APSIPA ASC 2014)Siem Reap, Cambodia
PapersAn Overview of Directivity Control Methods of the Parametric Array LoudspeakerAcademic JournalInternational coauthorshipC. Shi;Y. Kajikawa;W.-S. GanAPSIPA Trans. on Signal and Information Processingvol. 3, e20 (12 pages)2014/12～10.1017/ATSIP.2014.18
International academic conferenceIntegration of Active Noise Control and Other Acoustic Signal Processing TechniquesSingle-AuthorY. Kajikawa2014/11/19～2014 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS2014)Okinawa, Japan
PapersParameter Estimation Method Using Volterra Kernels for Nonlinear IIR FiltersAcademic JournalCo-authorK. Iwai;Y. KajikawaIEICE Trans. on Fundamentalsvol. E97-A, no. 11, pp. 2189-21992014/11～
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International academic conferenceNoise Source Localization for Active Noise ControlIn refereedAcademic JournalInternational coauthorshipS. Hase;Y. Kajikawa;L. Liu;S. M. Kuo2014/10/9～2014 International Workshop on Smart Info-Media Systems in Asia (SISA2014)Ho Chi Minh City, Vietnam
International academic conferenceA Study on Linearization of Nonlinear Distortions in Parametric Array LoudspeakersIn refereedAcademic JournalInternational coauthorshipY. Hatano;C. Shi;Y. Kajikawa2014/10/9～2014 International Workshop on Smart Info-Media Systems in Asia (SISA2014)Ho Chi Minh City, Vietnam
PapersModified-Error Adaptive Feedback Active Noise Control System Using Linear Predic-tion FilterAcademic JournalCo-authorN. Miyazaki;Y. KajikawaIEICE Trans. on Fundamentalsvol. E97-A, no. 10, pp. 2021-20322014/10～
Academic presentationCo-author2014/9/12～
International academic conferenceStudy on Acoustic FDTD Analysis for Compact Acoustic SystemsCo-authorT. Tanada;Y. Kajikawa2014/9/11～Forum Acusticum 2014Krakow, Poland
International academic conferenceStudy on Active Noise Control System Using Parametric Array LoudspeakersIn refereedAcademic JournalInternational coauthorshipK. Tanaka;C. Shi;Y. Kajikawa2014/9/9～Forum Acusticum 2014Krakow, Poland
International academic conferenceNonlinear Distortion Reduction for Electrodynamic Loudspeaker Using Nonlinear FilteringCo-authorK. Iwai;Y. Kajikawa2014/9/4～22nd European Signal Processing Conference (EUSIPCO2014)Lisbon, Portugal
Academic presentationCo-authorC. Shi;Y. Kajikawa2014/9～
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CommentaryAcademic JournalSingle-AuthorKAJIKAWA,Yoshinobu2014/1～
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International academic conferenceRecent Applications and Challenges on Active Noise ControlIn refereedAcademic JournalInternational coauthorshipY. Kajikawa;W-S. Gan;S. M. Kuo2013/9～8th International Symposium on Image and Signal Processing and Analysis (ISPA 2013)Trieste, Italy
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International academic conferenceEstimation of Nonstationary Harmonic Signals and Its Application to Active Control of MRI NoiseIn refereedAcademic JournalInternational coauthorshipM. Niedzwiecki;M. Meller;Y. Kajikawa;D. Lukwinski2013/5～
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BookMonographCo-author2013/1/15～
International academic conferenceReproduction of Varied Sound Image Localization for Real Source in Stereo Audio SystemIn refereedAcademic JournalCo-authorS. Okuro;Y. Kajikawa2012/12/3～Asia-Pacific Signal and Information Processing Association 2010 Annual Summit and Conference (APSIPA ASC 2012)Hollywood, USA
International academic conferenceNonlinear Signal Processing for Compensating Nonlinear Distortion of LoudspeakersIn refereedAcademic JournalCo-authorK. Iwai;Y. Kajikawa2012/12/3～Asia-Pacific Signal and Information Processing Association 2010 Annual Summit and Conference (APSIPA ASC 2012)Hollywood, USA
CommentaryUnrefereedAcademic JournalSingle-AuthorKAJIKAWA,Yoshinobu2012/12/1～
International academic conferenceMultimodal Person Authentication System Using Features of UtteranceIn refereedAcademic JournalCo-authorT. Nishino;Y. Kajikawapp. 43-472012/11/4～2012 IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS 2012)New Taipei City, Taiwan
International academic conferenceImprovement in Transmission Characteristics in Acoustic OFDM with Adaptive Microphone ArrayIn refereedAcademic JournalCo-authorS. Kono;Y. Kajikawa2012/11/4～2012 IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS 2012)New Taipei City, Taiwan
PapersAutomatic Parameter Adjustment Method for Audio Equalizer Employing Interactive Genetic AlgorithmIn refereedAcademic JournalCo-authorY. Mishima;Y. KajikawaIEICE Trans. on Fundamentalsvol. E95-A, no. 11, pp. 2036-20402012/11/1～
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International academic conferenceA Study on Parallel Cascade Structure for 2nd-order Volterra KernelIn refereedAcademic JournalCo-authorR. Kishi;Y. Kajikawapp. 61-652012/9/6～2012 International Workshop on Smart Info-Media System in Asia (SISA2012)Bangkok, Thailand
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Papers[Overview Paper] Recent Advances on Active Noise Control: Open Issues and Innovative ApplicationsIn refereedAcademic JournalInternational coauthorshipY. Kajikawa;W.-S. Gan;S. M. KuoAPSIPA Trans. on Signal and Information Processingvol. 1, issue 12012/8/28～http://dx.doi.org/10.1017/ATSIP.2012.4
International academic conferenceLinearization of Dynamic Loudspeaker System Using Third-Order Nonlinear IIR FilterIn refereedAcademic JournalCo-authorK. Iwai;Y. Kajikawapp. 1970-19742012/8/27～20th European Signal Processing Conference (EUSIPCO2012)Bucharest, Romania
International academic conferenceTheoretical Discussion of the Filtered-X LMS Algorithm Based on Statistical Mechanical AnalysisIn refereedAcademic JournalCo-authorS. Miyoshi;Y. Kajikawapp. 341-3442012/8/5～IEEE Statistical Signal Processing Workshop (SSP2012)Ann Arbor, USA
BookMonographCo-authorKAJIKAWA,Yoshinobupp. 490-4992012/7/30～
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International academic conferenceHead-Mounted Active Noise Control System and Its Application to Reducing MRI NoiseIn refereedAcademic JournalCo-authorN. Miyazaki;Y. Kajikawa2012/5/16～Acoustics 2012Hong Kong, China
International academic conferenceThird-order Nonlinear IIR Filter for Compensating Nonlinear Distortions of Loudspeaker SystemIn refereedAcademic JournalCo-authorK. Iwai;Y. Kajikawa2012/5/15～Acoustics 2012Hong Kong, China
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Academic presentation発話に伴う特徴を用いた個人認証手法に関する検討In refereedAcademic JournalCo-author2012/3～
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International academic conferenceBiometrics Authentication Method Using Lip Motion in UtteranceIn refereedAcademic JournalCo-authoredA. Sayo;Y. Kajikawa;M. Muneyasu2011/12/13～8th International Conference on Information, Communications, and Signal Processing (ICICS2011)Singapore
International academic conference[Invited Paper] Feedback Active Noise Control System and Its Application to MRI NoiseIn refereedAcademic JournalSingle-AuthorY. Kajikawa2011/12/13～8th International Conference on Information, Communications, and Signal Processing (ICICS2011)Singapore
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International academic conferenceAutomatic Parameter Adjustment Method for Audio Equalizer Employing Interactive Genetic AlgorithmIn refereedAcademic JournalCo-authoredY. Mishima;Y. Kajikawa2011/10/31～2011 International Workshop on Smart Info-Media Systems in Asia (SISA 2011)Nagasaki, Japan
International academic conferenceModified-Error Filtered-x Algorithm Employing Linear Prediction FilterIn refereedAcademic JournalCo-authoredS. Okuno;Y. Kajikawa2011/10/31～2011 International Workshop on Smart Info-Media Systems in Asia (SISA 2011)Nagasaki, Japan
International academic conferenceMethod of Improving Transmission Characteristic While Maintaining Sound Quality for Use in Acoustic OFDMIn refereedAcademic JournalCo-authoredM. Tamura;Y. Kajikawa2011/10/31～2011 International Workshop on Smart Info-Media Systems in Asia (SISA 2011)Nagasaki, Japan
PapersIn refereedAcademic JournalCo-author;2011/10/1～
CommentaryUnrefereedAcademic JournalSingle-AuthorKAJIKAWA,Yoshinobu2011/10/1～
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International academic conferenceSemi-adaptive Feedback Active Control of MRI NoiseIn refereedAcademic JournalInternational coauthorshipM. Meller;H. Tetsu;Y. Kajikawa;M. Niedzwiecki2011/9/6～Inter-noise 2011Osaka, Japan
International academic conferenceRobust Feedback Active Noise Control Using Linear Prediction FilterIn refereedAcademic JournalCo-authoredH. Kobayashi;Y. Kajikawa2011/9/6～Inter-noise 2011Osaka, Japan
PapersLinearization Method Based on Multiple Loudspeaker SystemsIn refereedAcademic JournalSingle-AuthorY. KajikawaAcoustical Science and Technologyvol. 32, no 5, pp. 220-2232011/9/1～
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PapersStatistical-mechanics Approach to the Filtered-X LMS AlgorithmIn refereedAcademic JournalCo-authorElectronics Lettersvol. 47, no. 17, pp. 997-9992011/8/18～
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PapersActive Noise Control System for Reducing MR NoiseIn refereedAcademic JournalCo-authorIEICE Trans. on Fundamentalsvol. E94-A, no. 7, pp. 1479-14862011/7/1～
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International academic conferenceParameter Estimation Method for Closed-box Loudspeaker SystemIn refereedAcademic JournalCo-authoredK. Iwai;Y. Kajikawapp. 2577-25822011/6/27～Forum Acusticum 2011Aalborg, Denmar
International academic conferenceAcoustic FDTD Analysis Considering Viscous and Advective EffectIn refereedAcademic JournalCo-authorD. Kawai;Y. Kajikawa;Y. Nomura;T. Miyakurapp. 2583-25872011/6/27～Forum Acusticum 2011Aalborg, Denmar
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International academic conferenceLinearization Ability Evaluation of Nonlinear Filters Employing Dynamic Distortion MeasurementIn refereedAcademic JournalSingle-AuthorY. Kajikawapp. 409-4122011/5/22～2011 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2011)Prague, Czech Republic
Academic presentationUnrefereedAcademic JournalCo-authorvol. 111, no. 27, SIP2011-17, pp. 95-1002011/5/13～
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Academic presentationUnrefereedAcademic JournalCo-authorvol. 110, no. 471, EA2010-134, pp.47-502011/3/18～
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PapersLinearization Ability Evaluation for Loudspeaker Systems Using Dynamic Distortion MeasurementIn refereedAcademic JournalCo-authorS. Kitagawa;Y. KajikawaIEICE Trans. on Fundamentalsvol. 94-A, no. 2, pp. 813-8162011/2/1～
Academic presentationUnrefereedAcademic JournalCo-authorvol. 110, no. 368, SIP2010-107, pp.227-2322011/1/21～
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BookMonographCo-author2011～
International academic conferenceActive Noise Control System for MR NoiseIn refereedAcademic JournalCo-authorM. Kumamoto;Y. Kajikawa;T. Tani;Y. Kurumipp. 543-5482010/12/14～Proc. of Asia-Pacific Signal and Information Processing Association 2010 Annual Summit and Conference (APSIPA2010)Biopolis, Singapore
International academic conferenceLow Computational Complexity Realization for Volterra FiltersIn refereedAcademic JournalCo-authorM. Gotoda;Y. Kajikawapp. 719-7322010/12/14～Proc. of Asia-Pacific Signal and Information Processing Association 2010 Annual Summit and Conference (APSIPA2010)Biopolis, Singapore
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Academic presentationUnrefereedAcademic JournalCo-authorvol. 110, no. 285, EA2010-88, pp.25-292010/11/8～
International academic conferenceSound Quality and Transmission Characteristic Improvement for Acoustic OFDMIn refereedAcademic JournalCo-authorM. Nishihara;Y. Kajikawapp. 158-1612010/10/26～Proc. of the 2010 International Symposium on Communications and Information Technologies (ISCIT2010)Tokyo, Japan
International academic conferenceNonlinear IIR Filter Considering Nonlinearity of Self-Inductance of Loudspeaker SystemsIn refereedAcademic JournalCo-authorK. Iwai;Y. Kajikawapp. 317-3202010/10/26～Proc. of the 2010 International Symposium on Communications and Information Technologies (ISCIT2010)Tokyo, Japan
International academic conferenceA Double-Talk-Detector Using Sound and Image InformationIn refereedAcademic JournalCo-authorH. Urakami;Y. Kajikawapp. 447-4502010/10/26～Proc. of the 2010 International Symposium on Communications and Information Technologies (ISCIT2010)Tokyo, Japan
International academic conferenceBase Station Layout Support System for Indoor Visible Light CommunicationIn refereedAcademic JournalCo-authorI. Miya;Y. Kajikawapp. 661-6642010/10/26～Proc. of the 2010 International Symposium on Communications and Information Technologies (ISCIT2010)Tokyo, Japan
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International academic conferenceFeedback Active Noise Control System Combining Linear Prediction FilterIn refereedAcademic JournalCo-authorY. Kajikawa;R. Hirayamapp. 31-352010/8/23～Proc. of 18th European Signal Processing Conference (EUSIPCO2010)Aalborg, Denmark
International academic conferenceA Study on Acoustic Theoretical Formulae for Compact Acoustic Reproduction SystemsIn refereedAcademic JournalCo-authorM. Nakamura;Y. Kajikawa;Y. Nomura;T. Miyakura2010/8/23～Proc. of the 10th International Congress on AcousticsSydney, Australia
CommentaryActive Noise Control and Its ApplicationUnrefereedAcademic JournalSingle-AuthorY. KajikawaSystem, Control, and InformationVol. 54, No. 8, pp. 308-3132010/8/15～
Academic presentationUnrefereedAcademic JournalCo-authorvol. 110, no. 88, SIP2010-34, pp. 69-742010/6/21～
Academic presentationUnrefereedAcademic JournalCo-authorvol. 110, no. 74, SIS2010-5, pp.25-302010/6/10～
Academic presentationUnrefereedAcademic JournalCo-authorvol. 110, no. 54, EA2010-14, pp.79-842010/5/27～
Academic presentationUnrefereedAcademic JournalSingle-AuthorKAJIKAWA,Yoshinobu2010/4/22～
International academic conferenceAn Active Noise Control System Using DXHS Algorithm for MR NoiseIn refereedAcademic JournalCo-authorM. Kumamoto;M, Kida;R. Hirayama;Y. Kajikawa;T. Tani;Y. KurumiProc. of 2009 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2009)pp. 69-722009/12/7～Proc. of 2009 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2009)Kanazawa, Japan
International academic conferenceA Novel Face Authentication Method Using Trajectory FeaturesIn refereedAcademic JournalCo-authorD. Sasaki;Y. KajikawaProc. of 2009 International Workshop on Smart Info-Media Systems in Asia (SISA2009)pp. 181-1862009/10/23～Proc. of 2009 International Workshop on Smart Info-Media Systems in Asia (SISA2009)Osaka, Japan
International academic conferenceSound Field Reproduction System Tracking Environmental Variations with DeconvolutionIn refereedAcademic JournalCo-authorY. Nobe;Y. KajikawaProc. of Asia-Pacific Signal and Information Processing Association 2009 Annual Summit and Conference (APSIPA2009)pp. 226-2292009/10/5～Proc. of Asia-Pacific Signal and Information Processing Association 2009 Annual Summit and Conference (APSIPA2009)Sapporo, Japan
International academic conferenceStability Improvement of Feedback Active Noise Control System Using Linear PredictionIn refereedAcademic JournalCo-authorR. Hirayama;Y. KajikawaProc. of Asia-Pacific Signal and Information Processing Association 2009 Annual Summit and Conference (APSIPA2009)pp. 230-2332009/10/5～Proc. of Asia-Pacific Signal and Information Processing Association 2009 Annual Summit and Conference (APSIPA2009)Sapporo, Japan
International academic conferenceA Sound Quality Customization System Using Paired ComparisonIn refereedAcademic JournalCo-authorS. Simizu;Y. KajikawaProc. of 17th European Signal Processing Conference (EUSIPCO2009)pp. 185-1882009/8/25～Proc. of 17th European Signal Processing Conference (EUSIPCO2009)Glasgow, Scotland
International academic conferenceHead-Mounted Active Noise Control System for MR NoiseIn refereedAcademic JournalCo-authorM. Kida;R. Hirayama;Y. KajikawaProc. of 2009 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2009)pp. 245-2482009/4/19～Proc. of 2009 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2009)Taipei, Taiwan
International academic conferenceDynamic Distortion Measurement for Linearization of Loudspeaker SystemsIn refereedAcademic JournalCo-authorS. Kitagawa;Y. Kajikawa2009/2/8～Proc. of 2008 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2008)Bangkok, Thailand
PapersProposal of a Noise Reduction Method Using DFE and Threshold-based Decision for Nondirected Non-LOS Link Optical Wireless CommunicationsIn refereedAcademic JournalH.Murai;Y.Tsuyuguchi;Y.Kajikawa;Y.NomuraThe Transactions of the Institute of Electronics, Information and Communication Engineers BVol. J91-A, No. 11, pp.1522-15272008/11/1～
International academic conferenceAn Active Noise Control System for MR Noise Implementation of an ANC System by Digital Signal ProcessorIn refereedAcademic JournalCo-authorM. Kida;R. Hirayama;Y. Kajikawa;T. Tani;Y. KurumiProc. of 9th International Conference on Signal Processing (ICSP2008)pp. 2689-26922008/10/26～Proc. of 9th International Conference on Signal Processing (ICSP2008)Beijing, China
International academic conferenceAn Active Noise Control System for MR Noise: A Study on an Available ANC System in Magnetic FieldIn refereedAcademic JournalCo-authorR. Hirayama;M. Kida;Y. Kajikawa;T. Tani;Y. KurumiProc. of 9th International Conference on Signal Processing (ICSP2008)pp. 2693-26962008/10/26～Proc. of 9th International Conference on Signal Processing (ICSP2008)Beijing, China
PapersAn Estimation Method of Parameters for Closed-box Loudspeaker SystemIn refereedAcademic JournalCo-authorR. Nakao;Y. Kajikawa;Y. NomuraIEICE Trans. on FundamentalsVol. EA91-A, No. 10, pp.3006-30132008/10/1～
International academic conferenceSubband Parallel Cascade Volterra Filter for Linearization of Loudspeaker SystemsIn refereedAcademic JournalSingle-AuthorY. Kajikawa2008/8/25～Proc. of European Signal Processing Conference (EUSIPCO2008)Lausanne, Switzerland
PapersAcoustic Echo Cancellation Using Sub-Adaptive FilterIn refereedAcademic JournalS.Ohta;Y.Kajikawa;Y.NomuraIEICE Trans. on FundamentalsVol. EA91-A, No. 3, pp. 801-8082008/4/1～
PapersSound Field Reproduction System Using Simultaneous Perturbation MethodIn refereedAcademic JournalCo-authorK.Tsukamoto;Y.Kajikawa;Y.NomuraIEICE Trans. on FundamentalsVol. EA91-A, No. 3, pp. 801-8082008/3/1～Grant-in-Aid for Encouragement of Young Scientists
PapersIntroduction of an Updating Algorithm Considering Frequency Characteristic of Secondary Path for Active Noise Control System Using Simultaneous Perturbation MethodIn refereedAcademic JournalCo-authorY. Tokoro;Y. Kajikawa;Y. NomuraThe Transactions of the Institute of Electronics, Information and Communication Engineers AVol. J91-A2008/2/1～Grant-in-Aid for Encouragement of Young Scientists
PapersTarget Frequency Response for Design of HeadphonesIn refereedAcademic JournalCo-authorT. Ashida;S. Konishi;H. Nakamura;Y. Kajikawa;Y. NomuraJournal of Acoustical Society of JapanVol. 64, No. 1, pp. 16-262007/12/25～
International academic conferenceA Method for Analyzing Compact Acoustic Reproduction Systems through Acoustic Equivalent CircuitIn refereedAcademic JournalCo-authorY. Nagase;S. Tsujikawa;Y. Kajikawa;Y. Nomura2007/9/4～Proc. of 19th International Congress on Acoustics (ICA2007)Madrid, Spain
PapersImprovement of the Stability and Cancellation Performance for ANC System Using the SP MethodIn refereedAcademic JournalCo-authorY. Tokoro;Y. Kajikawa;Y. NomuraIEICE Trans. on FundamentalsVol. EA90-A, No. 8, pp. 1555-15632007/8/1～Grant-in-Aid for Encouragement of Young Scientists
PapersLinearization of Loudspeaker Systems Using a Sub-band Parallel Cascade Volterra FilterIn refereedAcademic JournalCo-authorH. Furuhashi;Y. Kajikawa;Y. NomuraIEICE Trans. on FundamentalsVol. EA90-A, No. 8, pp. 1616-16192007/8/1～
International academic conferenceAcoustic Echo Cancellation Using Sub-Adaptive FilterIn refereedAcademic JournalCo-authorY. Kajikawa;S. Ohta;Y. NomuraProc. of 2007 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2007)Vol. 1, pp. 85-882007/4/15～Proc. of 2007 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2007)Hawaii, U.S.A.
CommentaryForeword to the special issue on acoustic technologies in robotsUnrefereedAcademic JournalSingle-AuthorKAJIKAWA YoshinobuThe Journal of the Acoustical Society of JapanVol. 63, No. 1, pp. 21-222007～
International academic conferenceRealization of Nonlinear Acoustic Echo Cancellation by Subband Parallel Cascade Volterra FilterIn refereedAcademic JournalCo-authorH. Furuhashi;Y. Kajikawa;Y. Nomura2006/12/12～Proc. of 2006 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2006)Yonago, Japan
International academic conferenceAcoustic Echo Cancellation Using Sub-Adaptive FilterIn refereedAcademic JournalCo-authorS. Ohta;Y. Kajikawa;Y. Nomura2006/12/12～Proc. of 2006 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2006)Yonago, Japan
PapersAcoustic Echo Cancellation with Noise Suppressor for Updating AlgorithmIn refereedAcademic JournalCo-authorKengo Igata;Yoshinobu Kajikawa;Yasuo NomuraIEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer SciencesVol. J89-A, No. 12, pp. 1119-11292006/12/1～In the hands-free telecomunication system, unlike the conventional handset, a microphone is not close to the mouth, but is fixed. Hence, since it is easy to gather the sound of ambient noise, the signal to noise ratio (SNR) becomes poor. In such environment, the performance of acoustic echo canceller (AEC), which is essential to a hands-free telecomunication system, deteriorates considerably. To solve this problem, it is effective to use a noise suppression circuit together. However, the noise suppression circuit may deteriorate call quality because of an influence on near-end talker's signal. This paper therefore proposes a method to apply a noise suppressor to only updating part of adaptive digital filter (ADF). The proposed mehtod can improve convergence speed of adaptive algorithms, which are valid for AEC, by whitening voice and improving SNR. Simulation results demonstrate that the proposed method can improve the ERLE about 5 [dB] and the EA about 10 [dB]in comparison with the conventional one.
International academic conference[Invited Paper] Multichannel Active Noise Control System without Secondary Path Models Using the Simultaneous Perturbation AlgorithmIn refereedAcademic JournalSingle-AuthorY. Kajikawa4th Joint Meeting of the Acoustical Society of America and the Acoustical Society of Japan4aSP42006/11/28～4th Joint Meeting of the Acoustical Society of America and the Acoustical Society of JapanHawaii, U.S.A.
International academic conferenceSound Reproduction System with Simultaneous Perturbation MethodIn refereedAcademic JournalCo-authorK. Tsukamoto;Y. Kajikawa;Y. Nomura2006/9/4～Proc. of XIV European Signal Processing Conference (EUSIPCO 2006)Florence, Italy
International academic conferenceImprovement of Cancellation Performance for ANC System Using the Simultaneous Perturbation MethodIn refereedAcademic JournalCo-authorY. Tokoro;Y. Kajikawa;Y. NomuraProc. of 2006 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2006)vol. V, pp. 297-3002006/5/14～Proc. of 2006 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2006)Toulouse, France
International academic conferenceA Study on Downlink Beamforming Using Block Weight in TDD/MC-CDMAIn refereedAcademic JournalCo-authorJ. Sato;Y. Kajikawa;Y. NomuraProc. of 2005 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2005)pp. 497-5002005/12/13～Proc. of 2005 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2005)HongKong, China
PapersIn refereedAcademic JournalCo-author2005/10/1～Grant-in-Aid for Scientific Research
PapersIn refereedAcademic JournalCo-author2005/9/1～
International academic conferenceMulti-Channel Active Noise Control with Freely Movable Quiet ZoneIn refereedAcademic JournalCo-authorY. Kajikawa;Y. NomuraProc. of the Eighth International Symposium on Signal Processing and Its Applications (ISSPA2005)Vol. 2, pp. 767-7702005/8/28～Proc. of the Eighth International Symposium on Signal Processing and Its Applications (ISSPA2005)Sydney, Australia
PapersIn refereedAcademic JournalCo-author2005/7/1～Grant-in-Aid for Encouragement of Young Scientists
International academic conferenceMulti-Channel Active Noise Control with Freely Movable Error MicrophonesIn refereedAcademic JournalCo-authorY. Kajikawa;Y. NomuraProc. of 2005 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2005)Vol. 3, pp. 149-1522005/3/18～Proc. of 2005 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2005)Philadelphia, U.S.A.
International academic conferenceLinearization of Loudspeaker Systems Using MINT and Volterra FiltersIn refereedAcademic JournalCo-authorY. Kajikawa;Y. NomuraProc. of 2005 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2005)Vol. 4, pp. 457-4602005/3/18～Proc. of 2005 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2005)Philadelphia, U.S.A.
International academic conferenceNovel Motion-JPEG2000 Video Transmission System over CDMA EnvironmentIn refereedAcademic JournalCo-authorY. Inoue;Y. Kajikawa;Y. NomuraProc. of International Symposium on Communications and Information Technologies 2004 (ISCIT 2004)Vol. 1, pp. 265-2682004/10/26～Proc. of International Symposium on Communications and Information Technologies 2004 (ISCIT 2004)Sapporo, Japan
International academic conferenceMulti-Channel Active Noise Control System Using the Perturbation Method with Correlation Removal FilterIn refereedAcademic JournalCo-authorT. Ninagawa;Y. Kajikawa;Y. NomuraProc. of XII European Signal Processing Conference (EUSIPCO 2004)pp. 921-9242004/9/6～Proc. of XII European Signal Processing Conference (EUSIPCO 2004)Vienna, Austria
International academic conferenceMulti-Channel Active Noise Control without Secondary Path ModelsIn refereedAcademic JournalSingle-AuthorY. KajikawaProc. of IFAC Workshop on Adaptation and Learning in Control and Signal Processing (ALCOSP2004)pp. 339-3442004/8/30～Proc. of IFAC Workshop on Adaptation and Learning in Control and Signal Processing (ALCOSP2004)Yokohama, Japan
International academic conferenceAn Image Transmission System in MC-DS-CDMA with Weight ControlIn refereedAcademic JournalCo-authorM. Ozawa;Y. Kajikawa;Y. NomuraProc. of 2004 IEEE International Conference on Communications (ICC2004)Vol. 5, pp. 2507-25102004/6/20～Proc. of 2004 IEEE International Conference on Communications (ICC2004)Paris, France
CommentaryIn refereedAcademic JournalSingle-AuthorKAJIKAWA,Yoshinobu2004/5/1～
International academic conferenceA Design of Mobile Phones Using Design Support Software for Compact Acoustic SystemsIn refereedAcademic JournalCo-authorM. Kajiwara;Y. Kajikawa;Y. NomuraProc. of International Congress on Acoustics (ICA2004)Mo.P2.212004/4/4～Proc. of International Congress on Acoustics (ICA2004)Kyoto, Japan
PapersIn refereedAcademic JournalCo-author2004/2/1～
CommentaryIn refereedAcademic JournalSingle-AuthorKAJIKAWA,Yoshinobu2004/2/1～
PapersIn refereedAcademic JournalCo-author2004～Grant-in-Aid for Encouragement of Young Scientists
International academic conferenceNovel Equalization Technique for DS-CDMA System with Adaptive Antenna ArrayIn refereedAcademic JournalCo-authorM. Tsuchimoto;Y. Kajikawa;Y. NomuraProc. of 2003 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2003)pp. 291-2962003/12/7～Proc. of 2003 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2003)Awaji Island, Japan
International academic conferenceMulti-channel Active Noise Control Using the Perturbation MethodIn refereedAcademic JournalCo-authorT. Ainoya;T. Mori;Y. Kajikawa;Y. NomuraProc. of 2003 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2003)pp. 702-7072003/12/7～Proc. of 2003 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2003)Awaji Island, Japan
International academic conferenceActive Noise Control Using the Perturbation Method – Verification in Actual Multi-Channel System –In refereedAcademic JournalCo-authorT. Ainoya;T. Mori;Y. Kajikawa;Y. NomuraProc. of Eighth International Workshop on Acoustic Echo and Noise Control (IWAENC2003)pp. 175-1782003/9/8～Proc. of Eighth International Workshop on Acoustic Echo and Noise Control (IWAENC2003)Kyoto, Japan
PapersEffectiveness of the Block Length Control in the Frequency-Domain Summational Normalized Block LMS Algorithm for Adaptive Volterra FiltersIn refereedAcademic JournalCo-authorTrans. of the IEICE AVol. J86-A, No. 7, pp. 797-8002003/7/1～In this paper, we present three kinds of effectiveness of the FDSNBLMS algorithm with block length control. The first effectiveness is that the proposed algorithm can improve the convergence speed and realize the low computational complexity. Concretely, the proposed algorithm can reduce the convergence time by half compared with the conventional algorithm in order to obtain the same estimation accuracy. Moreover, the execution of 2-D FFT can be reduced in proportion to sample time. The second effectiveness is that the proposed algorithm can make the convergence fast and stable compared with the conventional algorithm for music signal. Concretely, the estimation accuracy of the proposed algorithm is two times higher than that of the conventional algorithm in the same sample time. The third effectiveness is the robustness. Concretely, the proposed algorithm can cope with noise and impulse response changes caused in common environments.Grant-in-Aid for Encouragement of Young Scientists
PapersDevelopment of a Software Tool for Eliminating Nonlinear DistortionIn refereedAcademic JournalCo-authorJ. Hamada;Y. Kajikawa;Y. NomuraAcoustical Science and TechnologyVol. 24, No. 4, pp. 186-1912003/7/1～In this paper, we present the effectiveness of a software tool for eliminating nonlinear distortions of loudspeaker systems through some experiments. The nonlinear distortions affect the sound quality of loudspeaker systems. We have presented some identification methods of loudspeaker systems and some compensation methods of nonlinear distortions. However, the software tool for compensating the distortions has not been realized yet. We therefore develop the software tool. Experimental results show that the 2nd- and 3nd-order nonlinear distortions of a loudspeaker system can be reduced in the range of 10[dB] to 20[dB]by the developed tool when noise level is below 70[dBA].Grant-in-Aid for Encouragement of Young Scientists
PapersAn Automatic Design Method for Compact Acoustic Systems\\ by the Genetic AlgorithmIn refereedAcademic JournalCo-authorT. Nakatani;Y. Kajikawa;Y. NomuraTrans. of the IEICE AVol. J86-A, No. 6, pp. 611-6192003/6/1～In this paper, we propose a design method of compact acoustic systems for preventing the sensitivity decline due to leaks by the Genetic Algorithm. This method can design acoustic equivalent circuits and the corresponding acoustic parameter values whose Sound Pressure Level is within the range based on the GSM(ETSI EN 300 903) and prevent the sensitivity decline. The proposed method uses the PfGA (Parameter-free Genetic Algorithm) for the design of equivalent circuits and the Michalewicz's Genetic Program for the design of acoustic parameters. We can obtain some equivalent circuits whose frequency response is hardly affected by leak. This method can be used for compact acoustic systems such as cellular phones. Furthermore, you can obtain useful information from the design results.
International academic conferenceActive Noise Control without a Secondary Path Model by Using a Frequency-Domain Simultaneous Perturbation Method with Variable PerturbationIn refereedAcademic JournalCo-authorY. Kajikawa;Y. Nomura2003/4/6～Proc. of the 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2003)Hong Kong
PapersFrequency Domain Active Noise Control Systems Using The Time Difference Simultaneous Perturbation MethodIn refereedAcademic JournalCo-authorT. Mori;Y. Kajikawa;Y. NomuraIEICE Trans. on FundamentalsVol. EA86-A, No. 4, pp. 946-9492003/4/1～In this letter, we propose a frequency domain active noise control system using the time difference simultaneous perturbation method. This method is an algorithm based on the simultaneous perturbation method which updates the coefficients of the noise control filter only by use of the error signal. The time difference simultaneous perturbation method updates the filter coefficients by using one kind of error signal, while the simultaneous perturbation method updates the filter coefficients by using two kinds of error signal. In the ANC systems, the time difference simultaneous perturbation method is superior because ANC systems cannot obtain two error signals at the same time. When this method is applied to ANC systems, the convergence speed can be increased to a maximum of twice that of the conventional method.
PapersAdaptive Volterra Filters Using Multirate Signal Processing and Their Application to Identification of Loudspeaker SystemsIn refereedAcademic JournalCo-authorS.Kinoshita;Y.Kajikawa;Y.NomuraTrans. of the IEICE AVol. J86-A, No. 4, pp. 393-4012003/4/1～In this paper, we propose a subband adaptive Volterra filter, whose filter taps can be appropriately assigned at each subband. The proposed subband adaptive Volterra filter can effectively identify nonlinear systems with nonlinear distortions concentrated in a frequency band. In this case, the conventional adaptive Volterra filter is ineffective because such a system may require long filter taps at a frequency band and short filter taps at another frequency band. Simulation results demonstrate the effectiveness of the proposed subband adaptive Volterra filter. In the simulation, we identify a loudspeaker system by using the proposed and conventional adaptive Volterra filters with the same computational complexity. As a result, the Reduction of the proposed adaptive Volterra filters is from 1.5dB to 7.5dB higher than that of the conventional one.Grant-in-Aid for Encouragement of Young Scientists 20020401-20050331
PapersAn Active Noise Control System Using Frequency Domain Simultaneous Perturbation Method with a Variable Perturbation MagnitudeIn refereedAcademic JournalCo-authorT. Mori;Y. Kajikawa;Y. NomuraTrans of the IEICE Avol. J86-A, no. 2, pp. 101-1102003/2/1～In this paper, we propose an active noise control (ANC) system using a novel frequency domain simultaneous perturbation method with automatic perturbation control. The proposed method can converge faster than the conventional method that uses the fixed perturbation. Concretely, the present perturbation value is set in proportional to the present error signal. As a result, the proposed system can improve the instability due to block processing and set the step-size large. The proposed system has the effectiveness when the perturbation value must be made small, especially, the proposed method can converge 50 times as fast as the conventional method in case where the perturbation value is 0.08. Moreover, the proposed method can suppress the noise due to the perturbation.Grants of Frontiear Science 19970401-20020331
CommentaryVoterra Filters and Their Application to Acoustical SystemsIn refereedAcademic JournalSingle-AuthorKAJIKAWA YoshinobuSystems, Control, And Informationvol. 47, no. 1, pp. 26-312003/1/15～
PapersAn Improvement of the Overall Online Modeling Method in Active Noise Control SystemsIn refereedAcademic JournalCo-authorTrans. of the IEICE AVol. J85-A, No. 12, pp. 1478-14822002/12/1～In this letter, we propose an improvement of the overall online modeling method in active noise control (ANC) systems. The proposed method utilizes the summational normalized LMS algorithm with a block length control for modeling a secondary path. The improved overall online method can consequently determine the step-size parameter more easily and converge faster than the conventional one. Moreover, the tracking property for variations of physical systems is improved. Simulation results demonstrate the fast convergence and the robustness for the variations of physical systems.
International academic conferenceActive Noise Control Systems Using the Frequency Domain Time Difference Simultaneous Perturbation MethodIn refereedAcademic JournalCo-authorT. Mori;Y. Kajikawa;Y. NomuraProc. of 2002 IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2002)pp. 197-2012002/11/21～Proc. of 2002 IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2002)Kaohsiung, Taiwan
International academic conferenceDevelopment of a Software Tool for Eliminating Nonlinear DistortionIn refereedAcademic JournalCo-authorJ. Hamada;Y. Kajikawa;Y. NomuraProc. of 2002 IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2002)pp. 277-2812002/11/21～Proc. of 2002 IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS2002)Kaohsiung, Taiwan
International academic conferenceLinearization Technique for Stereophonic Reproduction Systems with NonlinearityIn refereedAcademic JournalCo-authorY. Kajikawa;Y. NomuraProc. of XI European Signal Processing Conference (EUSIPCO 2002)Vol. 1, pp. 321-3242002/9/3～Proc. of XI European Signal Processing Conference (EUSIPCO 2002)Toulouse, France
PapersAliasing Avoidance And Reduction of Computational Complexity in Volterra FiltersIn refereedAcademic JournalCo-authorTrans. of the IEICE AVol. J85-A, No. 1, pp. 10-162002/1～We have proposed a nonlinear inverse system using Volterra filters to eliminate nonlinear distortions of loudspeaker systems. However, the computational complexity of Volterra filters is so huge to realize them on DSP. There are also frequency ranges containing aliasing elements in output signals of Volterra filters. Since the method restricting input signals to avoid aliasing sets the sampling frequency twice as high as Nyquist frequency, the method processes unused frequency ranges. In this paper, we therefore propose a composition not to arise aliasing even if the sampling frequency is set to Nyquist frequency. As a result, the composition can reduce the computational complexity of Volterra filters. Next, we also propose an effective method identifying the Volterra filter in the proposed composition. Moreover, the identification method is applied to nonlinear inverse systems. Finally, simulation results demonstrate the effectiveness of the proposed methods.Grant-in-Aid for Encouragement of Young Scientists
PapersFrequency Domain Active Noise Control System without a Secondary Path Model via Perturbation MethodIn refereedAcademic JournalCo-authorY.Kajikawa;Y.NomuraIEICE Trans. on FundamentalsVol. EA84-A, No. 12, pp. 3090-30982001/12～
PapersMusic database retrieval system\\with sensitivity words using music sensitivity spaceIn refereedAcademic JournalCo-authorT. Ikezoe;Y. Kajikawa;Y. NomuraTrans. of Information Processing Society of JapanVol. 42, No. 12, pp. 3201-32122001/12～We propose a music retrieval system with words expressing impression of the tune (sensitivity words) in this paper. The conventional music retrieval systems with sensitivity words have the following problems: (1) they cannot retrieve music with delicate nuance; (2) they cannot retrieve music with more than one sensitivity word; (3) the orthogonal of axes forming the retrieval space is not guaranteed; (4) they asume the relation between tune impression and sensitivity words or tune charactseristics to be linear; (5) only objective or subjective evaluation goes in the evaluation of the system. In this paper, we therefore propose a novel music retrieval system in order to solve these problems. First, the retrieval space, which expresses the psychological correlation of tune impression, is constructed by using the semantic differential method and the factor analysis. Moreover, a position of the tune registered in the music database on the retrieval space is obtained by the genetic algorithm, the multiple regression analysis, and the neural network. Next, a position corresponding to the impression input by user on the retrieval space is predicted by the multiple regression analysis or the neural network, then the tune positioning near the predicted position is output as the retrieval result. Finally, the objective evaluation demonstrates that the correct rates of the proposed system are 100% and the subjective evaluation demonstrates that the proposed system satisfied the 90% subjects.
PapersIdentification of Third-order Volterra Kernels by Frequency Response Method and Its application to Loudspeaker SystemsIn refereedAcademic JournalCo-authorM. Tsujikawa;Y. Kajikawa;Y. NomuraTrans. of the IEICE AVol. J84-A, No. 11, pp. 1333-13452001/11～In this paper, we propose the method identifying the 3rd-order Volterra kernels by multi-sinusoidal waves. The level of the 3rd-order nonlinear distortion of loudspeaker systems is nearly equal to that of the 2nd-order one. The 3rd-order nonlinear distortion affects the sound quality of loudspeaker sys-tems. Therefore, the 3rd-order nonlinear distortion should be eliminated. Identifying the 3rd-order nonlinear distortion with the 3rd-order Volterra filter, however, is essential to eliminate it. In this pa-per, the features of the 3rd-order Volterra kernels are explained and the identification method using those features is proposed. We also identify the Volterra kernels of an actual loudspeaker system by the proposed method and examine the identification accuracy. Moreover, we eliminate the 3rd-order nonlinear distortion by using the identified Volterra kernels and demonstrate the effectiveness of the proposed method.Grant-in-Aid for Encouragement of Young Scientists
International academic conferenceAn Automatic Design Technique Using Genetic Algorithm for the Acoustic Component of Mobile PhonesIn refereedAcademic JournalCo-authorY. Nomura;T. Nakatani;Y. Kajikawa2001/9/3～Proc. of the 17th International Congress on AcousticsRome, Italy
PapersFrequency-Domain Active Noise Control System Using Optimal Step SizesIn refereedAcademic JournalCo-authorY.Kajikawa;K.Ashitaka;Y.NomuraTrans. of the IEICE AVol. J84-A, No. 7, pp. 883-8922001/7～In this paper, we propose a frequency domain active noise control system using optimal step-size parameters for each frequency. The proposed ANC system can converge faster than the conventional ANC system using the Filtered-x LMS algorithm with optimal step-size parameter because the proposed system uses the optimal step-size parameters for each frequency. Moreover, the proposed system can converge by setting step-size parameters at unstable frequencies to 0 in the case where the phase error of the secondary path model does not satisfy the stable condition, whereas the conventional ANC system cannot converge in the case. In this paper, the theoretical equation of optimal step-size parameters is derived by using information obtainable during system operation. Next, we investigate the structure of the ANC system using the optimal step-size parameters obtained from the theoretical equation. Moreover, a control technique determining unstable frequencies is introduced. Finally, simulation results demonstrate the efficiency of the proposed ANC system.
International academic conferenceSubband Adaptive Volterra Filter and Its Application to Identification of Loudspeaker SystemsIn refereedAcademic JournalCo-authorS. Kinoshita;Y. Kajikawa;Y. Nomura2001/6/3～Proc. of the 2001 IEEE-EURASIP Nonlinear Signal and Image Processing WorkshopMaryland, U.S.A.
International academic conferenceSummational Complex NLMS Algorithm for Frequency-Domain Adaptive Volterra FiltersIn refereedAcademic JournalCo-authorY. Kajikawa;M. Tsujikawa;Y. Nomura2001/6/3～Proc. of the 2001 IEEE-EURASIP Nonlinear Signal and Image Processing WorkshopMaryland, U.S.A.
PapersImpulse Noise Removal Technique Considering Directional Difference of Image SignalIn refereedAcademic JournalCo-authorY. Hashimoto;Y. Kajikawa;Y. NomuraTrans. of the IEICE AVol. J84-A, No. 6, pp. 759-7682001/6～In this paper, we propose a novel progressive switching (PS) based filter. The proposed filter compensates corrupted pixels except the processing pixel by using all pixels (including the compensated pixels) in the same window. In contrast, the conventional PS filters estimate the processing pixel by only uncorrupted pixels (original pixels). Hence, the proposed filter has higher estimation accuracy than the conventional one in case of being lacking in available uncorrupted pixels. This case occures when most pixels are corrupted by impluse noise in the processing window. The proposed filter also incorporates shapes (directions) of image signals, such as edges and details, into the filtering operation. Hence, the proposed filter can preserve original pixels better than the conventional one. The filtering operation of the directional difference filter we have already proposed in applied to the proposed filter in order to realize the above operation. We examine the efficiency of the proposed filter through a lot of examples. Experimental results demonstrate that the proposed filter can improve the noise removal ability and original signal preservation.
International academic conferenceFrequency Domain Active Noise Control System Using Optimal Step-Size ParametersIn refereedAcademic JournalCo-authorY. Kajikawa;Y. NomuraProc. of the 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2001)Vol. 5, pp. 3217-32202001/5/7～Proc. of the 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2001)Utah, U.S.A.
International academic conferenceVolterra Filters Using Multirate Signal Processing and Their Application to Loudspeaker SystemsIn refereedAcademic JournalCo-authorS. Kinoshita;Y. Kajikawa;Y. NomuraProc. of the 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2001)Vol. 6, pp. 3497-35002001/5/7～Proc. of the 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP2001)Utah, U.S.A.
PapersRemoval of Impulse Noise Using Impulse Noise Position Information by High Performance Impulse DetectorIn refereedAcademic JournalCo-authorY. Hashimoto;Y. Kajikawa;Y. NomuraTrans. of the IEICE AVol. J84-A, No. 1, pp. 1-122001/1～
International academic conferenceHigh Performance Impulse Detectors and Its Application to Progressive Switching Scheme-Based FiltersIn refereedAcademic JournalCo-authorY. Hashimoto;Y. Kajikawa;Y. NomuraProc. of the International Workshop on Signal Processing Applications and Technologypp. 77-802000/10/20～Proc. of the International Workshop on Signal Processing Applications and TechnologyTokyo, Japan
International academic conferenceIdentification of Third-order Volterra Kernels by Multi-sinusoidal Waves and Its Application to Loudspeaker SystemsIn refereedAcademic JournalCo-authorM. Tsujikawa;Y. Kajikawa;Y. NomuraProc. of the International Workshop on Signal Processing Applications and Technologypp. 147-1502000/10/20～Proc. of the International Workshop on Signal Processing Applications and TechnologyTokyo, Japan
PapersDirectional Difference-Based Switching Median FiltersIn refereedAcademic JournalCo-authorY. Hashimoto;Y.akjikawa;Y. NomuraTrans. of the IEICE AVol. J83-A, No. 10, pp. 1131-11402000/10～
International academic conferenceDirectional Difference-Based Impulse Detector and Median FilterIn refereedAcademic JournalCo-authorY. Hashimoto;Y. Kajikawa;Y. NomuraProc. of X European Signal Processing Conference (EUSIPCO 2000)TAP2-22000/9/4～Proc. of X European Signal Processing Conference (EUSIPCO 2000)Tampere, Finland
International academic conferenceFrequency Domain Active Noise Control System without Secondary Path ModelIn refereedAcademic JournalCo-authorY. Kajikawa;Y. NomuraProc. of X European Signal Processing Conference (EUSIPCO 2000)TPP3-22000/9/4～Proc. of X European Signal Processing Conference (EUSIPCO 2000)Tampere, Finland
International academic conferenceIdentification and Elimination of Second-order Nonlinear Distortion of Loudspeaker Systems Using Digital Volterra FilterIn refereedAcademic JournalCo-authorM. Tsujikawa;T. Shiozaki;Y. Kajikawa;Y. NomuraProc. of X European Signal Processing Conference (EUSIPCO 2000)FPP1-42000/9/4～Proc. of X European Signal Processing Conference (EUSIPCO 2000)Tampere, Finland
International academic conferenceStable Condition Considering Modeling Error in the Filtered-x LMS AlgorithmIn refereedAcademic JournalCo-authorY. Kajikawa;J. Yabuki;Y. NomuraProc. of the 2000 IEEE International Symposium on Circuits and Systems (ISCAS2000)Vol. 3, pp. 642-6452000/5/28～Proc. of the 2000 IEEE International Symposium on Circuits and Systems (ISCAS2000)Geneva, Switzerland,
International academic conferenceActive Noise Control System without Secondary Path ModelIn refereedAcademic JournalCo-authorY. Kajikawa;Y. NomuraProc. of the 2000 IEEE International Symposium on Circuits and Systems (ISCAS2000)Vol. 4, pp. 349-3522000/5/28～Proc. of the 2000 IEEE International Symposium on Circuits and Systems (ISCAS2000)Geneva, Switzerland
International academic conferenceIdentification and Elimination of Second-order Nonlinear Distortion of Loudspeaker Systems Using Volterra FilterIn refereedAcademic JournalCo-authorM. Tsujikawa;T. Shiozaki;Y. Kajikawa;Y. NomuraProc. of the 2000 IEEE International Symposium on Circuits and Systems (ISCAS2000)Vol. 5, pp. 249-2522000/5/28～Proc. of the 2000 IEEE International Symposium on Circuits and Systems (ISCAS2000)Geneva, Switzerland
PapersDirectional Difference Filter: Its Effectiveness in the Post-Processing of Noise DetectorsIn refereedAcademic JournalCo-authorHASHIMOTO/Yuuhei;KAJIKAWA/Yoshinobu;NOMURA/Yasuoimage processing;impulsive noise;Noise Detectors;Directional Difference FilterThe Transactions of the Institute of Electronics, Information and Communication Engineers AVol. J83-A, No. 4, pp. 361-3692000/4～In this paper, we propose a directional difference filter, which has the superior noise removal ability for images degraded by impulsive noise and the original signal preservation. The proposed filter estimates the value of pixel at a processing point from directional form information of edge in the local domain and restores that value at the point consecutively so as to be able to remove impulsive noise with high probability. The proposed method can preserve the original signal robustly for the detection error of noise detector. This filter works effectively as the postprocessor of noise detector used for removing a high generating probability noise. In this paper, we show that the proposed method has the robustness for the detection error of actual noise detectors and the superiority to a conventional noise reduction filter on image processing from experiments.
PapersNeural Filters Considering Power Variations of Input SignalIn refereedAcademic JournalCo-authorYANASAKA/Kazuhide;SEKI/Fumitaka;KAJIKAWA/Yoshinobu;NOMURA/YasuoAdaptive Volterra Filter;nonlinear system;Neural Filters;Power VariationsThe Transactions of the Institute of Electronics, Information and Communication Engineers A2000/3～In this paper, we propose the component of a Neural Filter that copes with power variations of input signals. Proposed Neural Filter consists of an Adaptive Filter and two types of Neural Filters. The Adaptive Filter identifies linear properties, one of Neural Filters identifies nonlinear wave properties, and another Neural Filter identifies nonlinear amplitude properties of the target system. Therefore proposed Neural Filter is suitable for identifying the nonlinear system that has power variations of input signals such as a loudspeaker system. In this paper, it is showed that proposed Neural Filter copes with power variations of input signals and has the higher accuracy than even scale Adaptive Volterra Filter for identifying third order nonlinear system. These results are showed on computer simulations.
PapersIdentification of Loudspeaker Systems Using Frequency Response MethodIn refereedAcademic JournalCo-authorM. Tsujikawa;T. Shiozaki;Y. Kajikawa;Y. NomuraThe Journal of the Acoustical Society of JapanVol. 56, No. 6, pp. 384-3952000～Modeling loudspeaker systems by Volterra series expansion is essential to eliminate the nonlinear distortion. We have proposed a method measuring the Volterra kernel of loudspeaker systems by multi sinusoidal wave. However, this method has problems not to consider the phase property of nonlinear element, third-order distortion, and over, the gap of amplitude and phase by using anti-aliasing filter. Therefore, we propose the new method measuring the second-order Volterra kernel by multi sinusoidal wave. In this method, the phase property of nonlinear element, third-order distortion, and the gap by using anti-aliasing filter are considered. And, we eliminate the nonlinear distortion of loudspeaker systems with the Volterra kernel measured by the new method on offline, and show the effectiveness of the new method.Grant-in-Aid for Encouragement of Young Scientists
PapersA Formulation of the Convergence Property for the Second-Order Adaptive Volterra Filter Using NLMS AlgorithmIn refereedAcademic JournalCo-authorTAKAHAMA/Yuri;KAJIKAWA/Yoshinobu;NOMURA/Yasuothe Convergence Property;the Second-Order Adaptive Volterra Filter;NLMS AlgorithmThe Transactions of the Institute of Electronics, Information and Communication Engineers A1999/7～In this paper, we discuss a formulation of the convergence property for the second-order Volterra filter using NLMS algorithm. Many studies of the convergence property for linear adaptive filter have been tried up to now. However, the convergence property of the adaptive Volterra filter has been never analyzed. Therefore, we clarify the convergence property for the second-order Volterra filter theoretically by formulating the convergence property of E-NLMS algorithm for the adaptive Volterra filter. We use the first order recursive filter expression, which is effective to analyze various properties of NLMS algorithm for linear adaptive filter, to formulate the convergence property of E-NLMS algorithm, and moreover, use the characteristic of the second order Volterra filter which is divided into the diagonal elements (D elements) and the other (ED elements). We show the theoretical formula derived in this paper to be effective by computer simulation.
PapersAdaptive Volterra Filter:Its Present and FutureIn refereedAcademic JournalSingle-AuthorKAJIKAWA/Yoshinobuupdate algorithms;digital filter;Volterra series expansion;nonlinear distortion;nonlinear system;Adaptive Volterra FilterThe Transactions of the Institute of Electronics, Information and Comunication Engineers A1999/6～Recently, the methods of using the digital filter (Volterra filter) based on the Volterra series expansion for the identification of a nonlinear system and the elimination of a nonlinear distortion have been proposed. The Volterra filter is obtained by extending conventional linear digital filter into nonlinear, and the structure and the characteristic include the linear digital filter. Therefore, the methods that have been developed in the linear digital filter can be easily introduced. In this paper, I introduce adaptive Volterra filters that modify the filter coefficients automatically. Especially, its update algorithms and problems are introduced, and its future is mentioned.
PapersConvergece Condition of the Simultaneous Perturbation Optimization method applied to adaptive filtersIn refereedAcademic JournalCo-authorKAJIKAWA/Yoshinobu;NOMURA/Yasuostep size parameter;pre-inverse systems;active noise control (ANC) systems;the Simultaneous Perturbation Optimization method;adaptive filtersThe Transactions of the Institute of Electronics, Information and Communication Engineers A1999/6～In this paper, we derive the convergence condition of the simultaneous perturbation optimization method applied to adaptive filter. The adaptive filter using the simultaneous perturbation optimization method has the characteristic updating the filter coefficients of adaptive filter by adding the perturbations to the filter coefficients. Hence, the simultaneous perturbation optimization method is expected to apply to active noise control (ANC) systems and pre-inverse systems. However, the convergence condition of the simultaneous perturbation optimization method applied to adaptive filter has not been studied up to now. In this paper, we derive theoretically the upper limit of step size parameter needed in order to converge the adaptive filter in the simultaneous perturbation optimization method. In addition, simulation results demonstrate the effectiveness of the derived theoretical formulae.
PapersClassification of Group According to Tune's Impression Using Nonlinear Distirction Analysis in the Music Sensibility SpaceIn refereedAcademic JournalCo-authorSAKAMOTO/Takashi;KAJIKAWA/Yoshinobu;NOMURA/YasuoSD method;factor analysis;multiple regression analysis;neural network;music information processing;Tune's Impression;Nonlinear Distirction Analysis;Music Sensibility SpaceTransactions of Information Processing Society of Japan1999/4～In this paper, we propose a method which can extract tune's characteristic and impression automatically and classify into the arbitrary groups only from score information given to computer using the nonlinear distinction analysis. The try to imitate a player's music activity by computer is called music information processing, and related researches have been studied actively in recent years. In these researches, the following methods are reported as a solution of the proposition how the player interprets a score, and gives the performance; (1) The rule generation method by production system considering the information described in the score and musical theory. (2) The method using neural network. (3) The method using multiple regression analysis. However, in spite of the fact that the skilled player changes his or her playing style according to the characteristic and impression of the tune, the system considering the fact has not existed yet. Therefore in this paper, in order to settle up the problem, the psychological listening experiment based on the standpoint of actual listeners is done using the SD method and the factor analysis at first. And applying the nonlinear distinction analysis by the neural network to the result, the computer automatically distinguishes what impression the tune has, and distributes the tune to a suitable group according to the impression. Furthermore, in an unknown tune, this system succeeded in the distinction of the impression of the tune by high accuracy of 88%.
PapersAn Active Noise Control System without Secondary Path ModelIn refereedAcademic JournalCo-authorKAJIKAWA/Yoshinobu;NOMURA/Yasuofiltered-x algorithm;the simultaneous perturbation optimization method;An Active Noise Control System;Secondary Path ModelThe Transactions of the Institute of Electronics, Information and Communication Engineers A1999/2～In this paper, we propose an active noise control (ANC) system without secondary path model. The proposed system is based on the simultaneous perturbation optimization method with block process. Consequently, the coefficients of an adaptive filter in the proposed system are updated by error signals only. The conventional ANC system using the filtered-x algorithm becomes unstable due to the error between the secondary path from secondary source to error sensor and its model. On the other hand, the proposed ANC system has an advantage of becoming stable because of not using the model. In this paper, we show the principle of the proposed ANC system, and also the effectiveness of this system by computer simulations.
PapersAn Online Design Method of Nonlinear Inverse System by Adaptive Volterra FilterIn refereedAcademic JournalCo-authorKAJIKAWA/Yoshinobu;NOMURA/Yasuononlinear distortions;Online Design Method;Nonlinear Inverse System;Adaptive Volterra FilterThe Transactions of the Institute of Electronics, Information and Communication Engineers A1999/1～In this paper, we propose an online design method of a nonlinear inverse system that eliminates the linear and the nonlinear distortions of a nonlinear system at the same time. We discuss the online design method by using adaptive Volterra filter. Although we have already proposed the off-line design methods, these had a problem that the elimination level of nonlinear distortion degrades when the characteristic of a target nonlinear system varies. First of all in this paper, we show effects of elimination of distortions due to modeling error of each filter that composes a nonlinear inverse system. Next, the proposed online design method is explained by dividing into three steps. At the first step, the online identification method of first order Volterra kernel is discussed. At the second step, the online design method of linear inverse filter is discussed. At the third step, the online identification method of second order Volterra kernel is discussed. Finally, simulation results demonstrate the effectiveness of the proposed method.
International academic conferenceThe Summational Projection Algorithm for the Adaptive Volterra FilterIn refereedAcademic JournalCo-authorY. Kajikawa;Y. NomuraProc. of IX European Signal Processing Conference (EUSIPCO’98)Vol. 2, pp. 745-7481998/9/8～Proc. of IX European Signal Processing Conference (EUSIPCO’98)Rhodes, Greece
PapersAn Analysis of the Convergence Property of Active Noise Control System Using Augmented Error.In refereedAcademic JournalCo-authorKAJIKAWA/Yoshinobu;DEMOTO/Katzuya;NOMURA/YasuoT'th order IIR filter expression;Convergence Property;Active Noise Control System;Augmented Error.The Transaction of the Institute of Electronics, Information and Communication Engineers A1998/6～The active noise control system using the strictly positive real property of the error model in the adaptive control theory has been proposed recently. However, this method is of no practical use because it has the assumption that the error path between the secondary source and the error sensor are known. In this paper, we present the convergence property of this method without the assumption above mentioned. We make the convergence property clear by using the modified block diagram and the T'th order IIR filter expression. It is made clear that the disturbance preventing the estimation of filter coefficients varies with its probability. Consequently, we make it clear that the convergence property of this method has danger of divergence.
International academic conferenceA Construction of an Automatic Piano Playing System Wearing a Performer’s Characteristic – The Generation of a Performer’s Characteristic by Musical Sensibility Space –In refereedAcademic JournalCo-authorT. Sakamoto;Y. Kajikawa;Y. NomuraProc. of 1997 Japan-China Joint Meeting on Musical AcousticsD-5, pp. 121-1241997/11/1～Proc. of 1997 Japan-China Joint Meeting on Musical AcousticsTokyo, Japan
International academic conferenceA Construction of an Automatic Piano Playing System Wearing a Player’s Characteristic by Neural NetworksIn refereedAcademic JournalCo-authorM. Hata;Y. Kajikawa;Y. NomuraProc. of 1997 Japan-China Joint Meeting on Musical AcousticsD-6, pp. 125-1281997/11/1～Proc. of 1997 Japan-China Joint Meeting on Musical AcousticsTokyo, Japan
PapersA Derivation of the Stable Condition for the Filtered-x LMS Algorithm in the Case where C Filter has Modeling Error.In refereedAcademic JournalCo-authorYABUKI/Jun'ya;KAJIKAWA/Yoshinobu;NOMURA/YasuoANC system;the Filtered-x LMS Algorithm;Modeling Error.;
FilterThe Transactions of the Institute of Electronics, Information and Communication Engineers A1997/11～When the ANC system is operated using the Filtered-x LMS algorithm, we have to determine the value of a constant called the step size parameter. However, if it is chosen too small value, the filter coefficients converge slowly, and if chosen too large to realize fast convergence, the system becomes unstable. Therefore, in order to obtain such value as realizes the stability of the system and the fast convergence at the same time, we have to obtain the limit value for stable control. But this value has been determined only by trial and error, because the process of obtaining it has been unknown till now. It this paper, we derive an equation of obtaining the value of the step size parameter that show the stable limit of the system from the allowable phase difference between C and , where C is a path between the secondary source-loudspeaker and the error-detection microphone, and is the model for C. Next, we try to express the equation as a function of the information obtainable when the system is operated actually. In addition, we show the effectiveness of the proposed equation by comparing the convergence property of the cause using the value of the step size parameter based on the proposed equation with that of the other case.
FilterThe Transactions of the Institute of Electronics, Information and Communication Engineers A1997/11～When the ANC system is operated using the Filtered-x LMS algorithm, we have to determine the value of a constant called the step size parameter. However, if it is chosen too small value, the filter coefficients converge slowly, and if chosen too large to realize fast convergence, the system becomes unstable. Therefore, in order to obtain such value as realizes the stability of the system and the fast convergence at the same time, we have to obtain the limit value for stable control. But this value has been determined only by trial and error, because the process of obtaining it has been unknown till now. It this paper, we derive an equation of obtaining the value of the step size parameter that show the stable limit of the system from the allowable phase difference between C and , where C is a path between the secondary source-loudspeaker and the error-detection microphone, and is the model for C. Next, we try to express the equation as a function of the information obtainable when the system is operated actually. In addition, we show the effectiveness of the proposed equation by comparing the convergence property of the cause using the value of the step size parameter based on the proposed equation with that of the other case.International academic conferenceA Design Method of a Nonlinear Inverse System by the Adaptive Volterra FilterIn refereedAcademic JournalCo-authorY. Kajikawa;Y. NomuraProc. of 1997 IEEE Workshop on Nonlinear Signal and Image ProcessingTP3-31997/9/8～Proc. of 1997 IEEE Workshop on Nonlinear Signal and Image ProcessingMichigan, U.S.A
International academic conferenceAn Elimination Method of the Nonlinear Distortion in Frequency Domain by the Volterra FilterIn refereedAcademic JournalCo-authorY. Kajikawa;Y. NomuraProc. of 1997 IEEE Workshop on Nonlinear Signal and Image ProcessingWP3-11997/9/8～Proc. of 1997 IEEE Workshop on Nonlinear Signal and Image ProcessingMichigan, U.S.A.
PapersThe Convergence and Stability Conditions of the NLMS Algorithm for the Adaptive Volterra Filter.In refereedAcademic JournalCo-authorTAKAHAMA/Yuri;KAJIKAWA/Yoshinobu;NOMURA/YasuoConvergence and Stability Conditions;the NLMS Algorithm;Adaptive Volterra FilteThe Transactions of the Institute of Electronic, Information and Communication Engineers A1997/7～In this paper, we pay attention to the NLMS algorithm, which is one of algorithms for the adaptive Volterra filter (AVF), and derive the convergence and the stability conditions. As a result, we show that both of the conditions in the nonlinear adaptive filter are the same as the condition in the linear, and also that each estimation error of the first- and second-order AVF affects another AVF in the systems that compose the first- and second-order AVF.
PapersA Determination Method of the Sizes of Telephone-Hardset from the Corresponding Acoustic Parameters with Neural NetworkIn refereedAcademic JournalCo-authorKAJIKAWA/Yoshinobu;NOMURA/Yasuo;OHGA/Juroacoustic equivalent circuit;Acoustic Parameters;Telephone-Hardset;Neural NetworkThe Journal of the Acoustical Society of Japan1997/4～The design in which acoustic equivalent circuit is used to design the telephone-handset is suitable for achieving given design philosophy. However, the designed acoustic parameters were impossible to be converted into actual sizes because theoretical formulae (relations) between the acoustic parameters in the acoustic equivalent circuit and the sizes of cavities and small holes, don't exist. Therefore, the method of modeling the above-mentioned relations by the neural network is proposed in this paper. In this method, the neural network learns the above-mentioned relations by using many pairs of acoustic parameters and actual sizes obtained by changing the sizes of cavities and small holes in telephone-handset variously. The acoustic parameters designed to achieve design philosophy given in the acoustic equivalent circuit can be converted into actual sizes according to this method. Moreover, since the scale of the neural network used to learn is small, the characteristics that learning time is short and the accuracy of the output value is high is possessed.
PapersA Design for Nonlinear Inverse System by the Adaptive Volterra FilterIn refereedAcademic JournalCo-authorKAJIKAWA/Yoshinobu;NOMURA/Yasuononlinear distortion;Nonlinear Inverse System;Adaptive Volterra FilterThe Transactions of the Institute of Electronics, Information and Communication Engineers A1996/11～In this paper, the off-line design method of a nonlinear inverse system, which eliminates linear distortion and nonlinear distortion at the same time, is proposed. The proposal method is a design method in time domain using adaptive Volterra filter. The linear inverse system with conventional linear filter has the fault that the nonlinear distortion increases though the system can eliminate the linear distortion. In this paper, the mechanism that the nonlinear distortion increases with elimination of the linear distortion is theoretically clarified by the Volterra theory. And, the design method of nonlinear inverse system, which eliminates the nonlinear distortion, is given by deriving the signal component caused by the tandem connection of the nonlinear system by the Volterra theory. The proposal method realizes that the nonlinear distortion can be decreased by 70dB or less and shortening of the design time is also possible.
PapersA Consideration on Elimination of Nonlinear Distortion of the Loudspeaker System by Using Digital Volterra Fiter.In refereedAcademic JournalCo-authorISHIKAWA/Tomokazu;NAKASHIMA/Kazuhiko;KAJIKAWA/Yoshinobu;NOMURA/Yasuothe Volterra expansion;Nonlinear Distortion;Loudspeaker System;Volterra Fiter.The Transactions of the Institute of Electronic,Information and Communication Engineers A1996/7～There are two types of distortion of the loudspeaker system, the linear and the nonlinear distortions. We have tried to eliminate the linear distortion by digital filters. However, the more quantity of the elimination of the linear distortion, results in the more quantity of the nonlinear distortion. Therefore in order to make a high quality audio system we need to eliminate both the linear and the nonlinear distortions at the same time. First, we have identified the loudspeaker system by the Volterra expansion, which expresses the relationship between input and output signals, and then proposed the design method of the inverse system. The result of simulation shows that a decrease of the nonlinear distortion of about 100dB can be obtained by using the design method proposed here. This shows the utility of the proposed method.
PapersAn Automatic Design Method for the Acoustic Parameters of Telephone-Handsets Reducing the Effects of Leak by Monte Carlo Method.In refereedAcademic JournalCo-authorKAJIKAWA/Yoshinobu;NOMURA/Yasuo;OHGA/JuroMonte-Carlo method;acoustic parameters;telephone-handset;Monte Carlo Method.;Leak;Telephone-Handsets;Acoustic Parameters;Automatic Design MethodIEICE Transactions on Fundamentals of Electronics,Communications and Computer Sciences.1996/6～When we use a telephone-handset, the frequency response of the telephone-earphone becomes degraded because of the leak through the slit between the ear and the earphone. Consequently, it is very important to establish the design method of the telephone-handset that reduces the effect of leak. No one has tried to design the telephone-handset to reduce the effect. We are the only ones to have proposed an automatic design method by nonlinear optimization techniques. However, this method gives only one set of the acoustic parameters aiming at a certain specific target frequency response, and therefore lacks flexibility in the actual design problem. On the other hand, the design method proposed in this paper, which uses Monte-Carlo method, gives an infinite number of sets of acoustic parameters that realize infinite frequency responses within the target allowable region. As these infinite number of sets become directly the design ranges of acoustic parameters, the proposed method has the flexibility that any set of the acoustic parameters belonging to the design ranges guarantees the corresponding response to be within the target allowable region, and at the same time reduces the effect of leak. This flexibility is advantageous to the actual design problem.
PapersAn Automatic Design Method for the Telephone-Handsets by the Neural Natwork.In refereedAcademic JournalCo-authorKAJIKAWA/Yoshinobu;NOMURA/Yasuo;OHGA/Juroacoustic parameters;acoustic system;Automatic Design;Telephone-Handsets;Neural Natwork.The Transaction of The Institute of Electronics,Information and Communication Engineers A1996/4～One design method of the acoustic system is to obtain the actual sizes after determining the acoustic parameters that realizes a target frequency response. However, the compact acoustic system, such as telephone-handset, is designed by cutting and trying at present, because the analysis of the acoustic equivalent circuit becomes very complicated. The factors making the analysis of the equivalent circuit complicated are the following two points: 1) the formula and the theory relating the acoustic parameter with the actual size are not established; 2) the number of parameters and the degree of freedom increase if the position and the number of the small holes are taken into account in the acoustic equivalent circuit. Therefore, these problems should be solved or avoided. Here we propose the design method which can obtain directly the sizes of structure from the frequency response without the analysis of the acoustic equivalent circuit. That is, this method can design directly the sizes of structure without using the equivalent circuit, because this method can model the relation between the actual size and the frequency response by the neural network. The result of evaluating the neural network constructed here suggests that this method is very effective for designing telephone-handsets.
International academic conferenceAn Automatic Design of Telephone-Handset Suppressing an Effect of Leak. ~A Design by Nonlinear Optimization Technique.~In refereedAcademic JournalCo-authorY. Kajikawa;Y. Nomura;J. Ohga15th International Congress on AcousticsVol.4, pp.213-2161995/6/26～15th International Congress on AcousticsTrondheim, Norway,
International academic conferenceAn Estimation of Acoustic Parameters of Telephone-Handset by Monte Carlo Method.In refereedAcademic JournalCo-authorY. Kajikawa;Y. Nomura;J. Ohga15th International Congress on AcousticsVol.4, pp.249-2521995/6/26～15th International Congress on AcousticsTrondheim, Norway
PapersPossibility of Reducing an Effect of Leak by an Automatic Design of Telephone-Handset Using Nonlinear Optimization Method.In refereedAcademic JournalCo-authorKAJIKAWA/Yoshinobu;NOMURA/Yasuo;OHGA/Juro;Leak;Automatic Design;Telephone-Handset;Nonlinear Optimization Method.The Journal of the Acoustical Society of Japan.1995/5～When we really use a telephone handset, the listening voice leaks through the slit between the ear and the earphone, and the transmission quality becomes poor. For reducing this effect by the leak, up to now telephone designers have reformed the shape of ear-piece, or telephone users have pressed the earpiece tightly against their ears. However these methods have a limit actually. Therefore, telephone designers should consider the structure of telephone handset such as reduces the effect of the leak in advance. In this paper we proposed an automatic design method, based on the nonlinear optimization technique, of such a telephone handset as reduces the effect of the leak by considering an estimation function applicable to various quantity of leak. As a result the diaphragm needs to be soft, light and resistive, and the capacity of cavities needs to be bigger than original one. Some examples of trial production show that the design method proposed here is effective to reduce the effect of leak.
PapersAn Estimation of Acoustic Parameters of Piezo-Electric Telephone by Monte Carlo Method.In refereedAcademic JournalCo-authorKAJIKAWA/Yoshinobu;NOMURA/Yasuo;OHGA/Jurothe nonlinear optimization method;telephone handset;;Acoustic Parameters;Piezo-Electric Telephone;Monte Carlo Method.The Transactions of the Institute of Electronics, Information and Communication Engineers A1995/1～As the problem of telephone handset designing, no formula has been obtained which can compute the acoustic parameters of the tele-phone microphone and telephone earphone of the actual handset from their sizes. Therefore, the design of telephone handset must be esti-mated exactly in order to solve this problem. We estimated the reli-able acoustic parameters by means of the nonlinear optimization method. However the method has the problem that there is an upper limit on the number of acoustic parameters estimated simultaneously. To avoid the problem, we have used Monte Carlo method. This method has the advantage that there is no upper limit on the above mentioned number, and also has effectiveness applicable to design of the handset, and the response calculated based on this method agree well with the measured response.
Participation in International Conferences
- IX European Signal Processing Conference Sep.1998-Sep. 1998
- The 2000 IEEE International Symposium on Circuits and Systems May2000-May 2000
- 15th International Congress on Acoustics May1995-May 1995
- 1997 IEEE Workshop on Nonlinear Signal and Image Processing Sep.1997-Sep. 1997
- X European Signal Processing Conference Sep.2000-Sep. 2000
- The 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing May2001-May 2001
- The 2001 IEEE-EURASIP Nonlinear Signal and Image Processing Workshop Jun.2001-Jun. 2001
- XI European Signal Processing Conference Sep.2002-Sep. 2002
- The IEEE International Symposium on Intelligent Signal Processing and Communication Systems Dec.2002-Dec. 2002
- The 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing Apr.2003-Apr. 2003
- The 2003 IEEE International Conference on Acoustics, Speech, and Signal Processing 2003-2003
- 2004 IEEE International Conference on Communications 2004-2004
- XII European Signal Processing Conference 2004-2004
- 2005 IEEE International Conference on Acoustics, Speech, and Signal Processing 2005-2005
- 2005 International Symposium on Intelligent Signal Processing and Communication Systems 2005-2005
- 006 IEEE International Conference on Acoustics, Speech, and Signal Processing 2006-2006
- XIV European Signal Processing Conference 2006-2006
Courses Taught
- Signal Processing
- Acoustic and Speech Signal Processing
- Thesis Projects I
- Thesis Projects II
- SeminarI（Electrical, Electronic
- SeminarII（Electrical, Electronic
- SeminarIII（Electrical, Electronic
- SeminarIV（Electrical, Electronic
- Advanced Speech and Audio
- Electrical, Electronic and Information Engineering PBL-B
- Electrical, Electronic and Information Engineering PBL-A
- SeminarVII（Electrical, Electronic
- Advanced Signal Processing
- Advanced Signal Processing
- Personal Information
- Research Activities
- Research Activities
- Community Service
- Courses Taught