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Paper Abstract and Keywords
Presentation 2012-11-16 11:45
Unified denoising and dereverberation method used in restoration of MTF-based power envelope
Masashi Unoki, Shota Morita (JAIST), Xugang Lu (NICT) EA2012-86 EMM2012-68
Abstract (in Japanese) (See Japanese page) 
(in English) Recent methods of speech enhancement have been proposed to suppress the effects of background noise and reverberation. The effect of background noise in these methods is regarded as additive and that of reverberation is convolutive. Therefore, methods of reducing noise and dereverberation have been applied separately in tandem. We previously unified the effects of noise and reverberation in the modulation transfer function (MTF) concept and we proposed an approach to simultaneously removing the effects of noise and reverberation. This paper further verifies our proposed approach, mathematically and quantitatively. In addition, we generalized the model to four types of real application scenarios, which corresponded to far and near field conditions under noisy reverberant conditions, based on mathematical analysis. We carried out 12,000 simulations for each according to the four application scenarios for denoising and dereverberating noisy reverberant speech, and objectively evaluated the proposed approach. The experimental results revealed that the proposed approach worked well in simultaneously denoising and dereverberating noisy reverberant speech, as the front-end of speech recognition systems.
Keyword (in Japanese) (See Japanese page) 
(in English) Modulation transfer function / denoising / dereverberation / power envelope restoration / unification / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 292, EA2012-86, pp. 29-34, Nov. 2012.
Paper # EA2012-86 
Date of Issue 2012-11-09 (EA, EMM) 
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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Conference Information
Committee EA EMM  
Conference Date 2012-11-16 - 2012-11-17 
Place (in Japanese) (See Japanese page) 
Place (in English) OITA Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EA 
Conference Code 2012-11-EA-EMM 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Unified denoising and dereverberation method used in restoration of MTF-based power envelope 
Sub Title (in English)  
Keyword(1) Modulation transfer function  
Keyword(2) denoising  
Keyword(3) dereverberation  
Keyword(4) power envelope restoration  
Keyword(5) unification  
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Keyword(7)  
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1st Author's Name Masashi Unoki  
1st Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
2nd Author's Name Shota Morita  
2nd Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
3rd Author's Name Xugang Lu  
3rd Author's Affiliation National Institute of Information and Communications Technology (NICT)
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Speaker Author-1 
Date Time 2012-11-16 11:45:00 
Presentation Time 25 minutes 
Registration for EA 
Paper # EA2012-86, EMM2012-68 
Volume (vol) vol.112 
Number (no) no.292(EA), no.293(EMM) 
Page pp.29-34 
#Pages 6 
Date of Issue 2012-11-09 (EA, EMM) 

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