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Paper Abstract and Keywords
Presentation 2011-05-12 13:00
Study on the power envelope restoration based on the MTF concept and its application to ASR systems in noisy reverberant environments
Shota Morita (JAIST), Xugang Lu (NICT), Masashi Unoki, Masato Akagi (JAIST), Ruediger Hoffmann (TUD) EA2011-7 SIP2011-7 SP2011-7
Abstract (in Japanese) (See Japanese page) 
(in English) We previously proposed a method for restoring the speech power envelope from noisy reverberant speech based on a simple modulation transfer function (MTF) concept. The method does not require the impulse response and noise conditions of the room acoustics to be measured. In this study, we further tested the proposed method as a front-end for ASR systems in noisy reverberant environments. Noisy reverberant speech signals were obtained by adding white noise to reverberant speech produced by convoluting clean speech signals (from the AURORA-2J database) with artificially made impulse response of room acoustics. The recognition performance based on the conventional Mel frequency cepstral coefficient (MFCC) feature was used as a baseline. Compared with the baseline, the proposed method obtained 8.33 % relative improvement in the error reduction rate.
Keyword (in Japanese) (See Japanese page) 
(in English) modulation transfer function / automatic speech recognition / noisy reverberant environments / sub-band power envelope restoration / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 26, EA2011-7, pp. 37-42, May 2011.
Paper # EA2011-7 
Date of Issue 2011-05-05 (EA, SIP, SP) 
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 EA2011-7 SIP2011-7 SP2011-7

Conference Information
Committee EA SIP SP  
Conference Date 2011-05-12 - 2011-05-13 
Place (in Japanese) (See Japanese page) 
Place (in English) Ritsumeikan Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Speech and Acoustic Signal Processing, Speech, and Related Topics 
Paper Information
Registration To EA 
Conference Code 2011-05-EA-SIP-SP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Study on the power envelope restoration based on the MTF concept and its application to ASR systems in noisy reverberant environments 
Sub Title (in English)  
Keyword(1) modulation transfer function  
Keyword(2) automatic speech recognition  
Keyword(3) noisy reverberant environments  
Keyword(4) sub-band power envelope restoration  
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1st Author's Name Shota Morita  
1st Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
2nd Author's Name Xugang Lu  
2nd Author's Affiliation National Institute of Information and Communications Technology (NICT)
3rd Author's Name Masashi Unoki  
3rd Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
4th Author's Name Masato Akagi  
4th Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
5th Author's Name Ruediger Hoffmann  
5th Author's Affiliation Laboratory of Acoustics and Speech Communication, Dresden University of Technology (TUD)
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Speaker Author-1 
Date Time 2011-05-12 13:00:00 
Presentation Time 25 minutes 
Registration for EA 
Paper # EA2011-7, SIP2011-7, SP2011-7 
Volume (vol) vol.111 
Number (no) no.26(EA), no.27(SIP), no.28(SP) 
Page pp.37-42 
#Pages 6 
Date of Issue 2011-05-05 (EA, SIP, SP) 

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