NDLI: Adaptive step-size parameter control for real-world blind source separation

Content Provider	IEEE Xplore Digital Library
Author	Nakajima, H. Nakadai, K. Hasegawa, Y. Tsujino, H.
Copyright Year	2008
Description	Author affiliation: Honda Res. Inst. Japan Co. Ltd., Saitama (Nakajima, H.; Nakadai, K.; Hasegawa, Y.; Tsujino, H.)
Abstract	This paper describes a method to adaptively control a step-size parameter which is used for updating a separation matrix to extract a target sound source accurately in blind source separation (BSS). The design of the step-size parameter is essential when we apply BSS to real-world applications such as robot audition systems, because the surrounding environment dynamically changes in the real world. It is common to use a fixed step-size parameter that is obtained empirically. However, due to environmental changes and noises, the performance of BSS with the fixed step-size parameter deteriorates and the separation matrix sometimes diverges. We propose a general method that allows adaptive step-size control. The proposed method is an extension of Newton's method utilizing a complex gradient theory and is applicable to any BSS algorithm. Actually, we applied it to six types of BSS algorithms for an 8ch microphone array embedded in Honda ASIMO. Experimental results show that the proposed method improves the performance of these six BSS algorithms through experiments of separation and recognition for two simultaneous speeches.
Starting Page	149
Ending Page	152
File Size	254518
Page Count	4
File Format	PDF
ISBN	9781424414833
ISSN	15206149
DOI	10.1109/ICASSP.2008.4517568
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-03-31
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Programmable control Adaptive control Blind source separation Source separation Microphone arrays Robots Acoustic noise Working environment noise Newton method Speech Newton’s method robot audition blind source separation adaptive step-size
Content Type	Text
Resource Type	Article

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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