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Paper Abstract and Keywords
Presentation 2007-06-29 13:45
High performance blind source separation using an adaptive step-size parameter method
Hirofumi Nakajima, Kazuhiro Nakadai, Yuji Hasegawa, Hiroshi Tsujino (Honda Research Institute Japan) EA2007-30
Abstract (in Japanese) (See Japanese page) 
(in English) This paper describes a novel blind source separation (BSS) method.
One of the most important factors in BSS performance is a step-size parameter to update a decomposition matrix which is generally used for extracting a target sound source.
A fixed value which was obtained empirically is commonly used as the step-size parameter. However, in the real world, the surrounding environment changes dynamically.
So, conventional BSS with a fixed step-size parameter does not provide the best performance and sometimes results in divergence of the decomposition matrix.
We propose a method that allows for an adaptive step-size parameter.
Since the proposed method is generally applicable to BSS methods, we applied it to six types of BSS algorithms with a microphone array embedded in Honda's ASIMO.
Experimental results show that the proposed method improves sound source separation in the four BSS algorithms, and the step-size parameter is maintained optimally even when the surrounding environment changes.
Keyword (in Japanese) (See Japanese page) 
(in English) Blind source separation / Independent component analysis / Step-size parameter / Adaptive processing / Geometric constraint / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 120, EA2007-30, pp. 19-24, June 2007.
Paper # EA2007-30 
Date of Issue 2007-06-22 (EA) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction		 All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF EA2007-30

Conference Information
Committee EA  
Conference Date 2007-06-29 - 2007-06-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Blind signal processing / General 
Paper Information
Registration To EA 
Conference Code 2007-06-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) High performance blind source separation using an adaptive step-size parameter method 
Sub Title (in English)  
Keyword(1) Blind source separation  
Keyword(2) Independent component analysis  
Keyword(3) Step-size parameter  
Keyword(4) Adaptive processing  
Keyword(5) Geometric constraint  
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Keyword(7)  
Keyword(8)  
1st Author's Name Hirofumi Nakajima  
1st Author's Affiliation Honda Research Institute Japan Co., Ltd. (Honda Research Institute Japan)
2nd Author's Name Kazuhiro Nakadai  
2nd Author's Affiliation Honda Research Institute Japan Co., Ltd. (Honda Research Institute Japan)
3rd Author's Name Yuji Hasegawa  
3rd Author's Affiliation Honda Research Institute Japan Co., Ltd. (Honda Research Institute Japan)
4th Author's Name Hiroshi Tsujino  
4th Author's Affiliation Honda Research Institute Japan Co., Ltd. (Honda Research Institute Japan)
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Speaker Author-1 
Date Time 2007-06-29 13:45:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2007-30 
Volume (vol) vol.107 
Number (no) no.120 
Page pp.19-24 
#Pages 6 
Date of Issue 2007-06-22 (EA) 

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