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Paper Abstract and Keywords
Presentation 2012-07-20 12:00
Study on Time Adaptive Noise Estimation using Environmental Images for Speech Recognition
Hitoshi Fujibayashi, Hiroki Imamura (Soka Univ.) SP2012-53
Abstract (in Japanese) (See Japanese page) 
(in English) Speech recognition has a problem that background noise degrades the recognition performance. Spectral subtraction as a noise suppression method is not sufficient when the noise is temporally changing during speech activity. We propose time adaptive noise estimation using environmental images to supplement the insufficiency of the spectral subtraction, and expect improvement of the recognition performance. The result of evaluation experiments in computer simulation environment showed increase of the recognition accuracy where signal-to-noise ratio of noisy speech is 15 and 20 dB.
Keyword (in Japanese) (See Japanese page) 
(in English) Noise Estimation / Environmental Image / Speech Activity / Time Adaptive / Speech Recognition / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 141, SP2012-53, pp. 19-22, July 2012.
Paper # SP2012-53 
Date of Issue 2012-07-12 (SP) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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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Conference Information
Committee SP IPSJ-SLP  
Conference Date 2012-07-19 - 2012-07-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Hotel Takinoyu (Yamagata Pref.) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Speech recognition, understanding, dialog, etc. 
Paper Information
Registration To SP 
Conference Code 2012-07-SP-SLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study on Time Adaptive Noise Estimation using Environmental Images for Speech Recognition 
Sub Title (in English)  
Keyword(1) Noise Estimation  
Keyword(2) Environmental Image  
Keyword(3) Speech Activity  
Keyword(4) Time Adaptive  
Keyword(5) Speech Recognition  
1st Author's Name Hitoshi Fujibayashi  
1st Author's Affiliation Soka University (Soka Univ.)
2nd Author's Name Hiroki Imamura  
2nd Author's Affiliation Soka University (Soka Univ.)
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Date Time 2012-07-20 12:00:00 
Presentation Time 30 
Registration for SP 
Paper # IEICE-SP2012-53 
Volume (vol) IEICE-112 
Number (no) no.141 
Page pp.19-22 
#Pages IEICE-4 
Date of Issue IEICE-SP-2012-07-12 

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