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Paper Abstract and Keywords
Presentation 2012-03-16 14:15
Iterative Blind Spatial Subtraction Array for Musical-Noise-Free Speech Enhancement in Diffuse Noise
Ryoichi Miyazaki, Hiroshi Saruwatari, Kiyohiro Shikano (NAIST), Kazunobu Kondo (YAMAHA) EA2011-125
Abstract (in Japanese) (See Japanese page) 
(in English) In this report, we propose a new iterative signal extraction method using a microphone array that can be applied to nonstationary noise. In our previous study, it was found that optimized iterative spectral subtraction (SS) results in speech enhancement with almost no musical noise generation, but this method is valid only for stationary noise. The proposed method consists of iterative blind dynamic noise estimation by independent component analysis (ICA) and musical-noise-free speech extraction by modi ed iterative SS, where multiple iterative SS is applied to each channel while maintaining the multi-channel property reused for ICA. Also, related to the proposed method, we discuss the justi cation of applying ICA to such signals nonlinearly distorted by SS. From objective and subjective evaluations, we reveal that the proposed method outperforms the conventional method.
Keyword (in Japanese) (See Japanese page) 
(in English) speech enhancement / higher-order statistics / iterative spectral subtraction / microphone array / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 490, EA2011-125, pp. 31-36, March 2012.
Paper # EA2011-125 
Date of Issue 2012-03-09 (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 EA2011-125

Conference Information
Committee EA  
Conference Date 2012-03-16 - 2012-03-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Central Research Laboratory, Hitachi, Ltd. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General Topics 
Paper Information
Registration To EA 
Conference Code 2012-03-EA 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Iterative Blind Spatial Subtraction Array for Musical-Noise-Free Speech Enhancement in Diffuse Noise 
Sub Title (in English)  
Keyword(1) speech enhancement  
Keyword(2) higher-order statistics  
Keyword(3) iterative spectral subtraction  
Keyword(4) microphone array  
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1st Author's Name Ryoichi Miyazaki  
1st Author's Affiliation Nara Institute of Science and Technology (NAIST)
2nd Author's Name Hiroshi Saruwatari  
2nd Author's Affiliation Nara Institute of Science and Technology (NAIST)
3rd Author's Name Kiyohiro Shikano  
3rd Author's Affiliation Nara Institute of Science and Technology (NAIST)
4th Author's Name Kazunobu Kondo  
4th Author's Affiliation Yamaha Corporation (YAMAHA)
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Speaker Author-1 
Date Time 2012-03-16 14:15:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2011-125 
Volume (vol) vol.111 
Number (no) no.490 
Page pp.31-36 
#Pages 6 
Date of Issue 2012-03-09 (EA) 

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