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) |
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EA2007-30 |
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