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Paper Abstract and Keywords
Presentation 2012-03-16 14:45
Speech Recognition under Noisy Environment using Bidirectional OM-LSA Noise Suppression
Yasunari Obuchi, Ryu Takeda, Masahito Togami (Hitachi) EA2011-126
Abstract (in Japanese) (See Japanese page) 
(in English) We propose a new noise suppression method, which is an extention of optimally-modified log-spectrum amplitude (OM-LSA) noise suppression with the bi-directional processing on the time axis. We also show the evaluation results which confirm the effectiveness of the proposed method. The proposed method works better than standard OM-LSA in the case where the estimation error of OM-LSA accumulates over time. A simple look-ahead mechanism is also implemented in each uni-directional estimation, and makes the estimation more robust. The evaluation experiments are carried out using our proprietary database and CENSREC-2, and the results approved the effectiveness of the proposed method.
Keyword (in Japanese) (See Japanese page) 
(in English) Noise suppression / OM-LSA / Bidirectional / Speech recognition / CENSREC-2 / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 490, EA2011-126, pp. 37-42, March 2012.
Paper # EA2011-126 
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 EA2011-126

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 Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Speech Recognition under Noisy Environment using Bidirectional OM-LSA Noise Suppression 
Sub Title (in English)  
Keyword(1) Noise suppression  
Keyword(2) OM-LSA  
Keyword(3) Bidirectional  
Keyword(4) Speech recognition  
Keyword(5) CENSREC-2  
Keyword(6)  
Keyword(7)  
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1st Author's Name Yasunari Obuchi  
1st Author's Affiliation Hitachi, Ltd. (Hitachi)
2nd Author's Name Ryu Takeda  
2nd Author's Affiliation Hitachi, Ltd. (Hitachi)
3rd Author's Name Masahito Togami  
3rd Author's Affiliation Hitachi, Ltd. (Hitachi)
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Speaker Author-1 
Date Time 2012-03-16 14:45:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2011-126 
Volume (vol) vol.111 
Number (no) no.490 
Page pp.37-42 
#Pages 6 
Date of Issue 2012-03-09 (EA) 

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