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Paper Abstract and Keywords
Presentation 2013-07-25 15:10
Effectiveness of discriminative approaches for speech recognition under noisy environments on the 2nd CHiME Challenge
Yuuki Tachioka (Mitsubishi Electric), Shinji Watanabe, Jonathan Le Roux, John R Hershey (MERL) SP2013-55
Abstract (in Japanese) (See Japanese page) 
(in English) The 2nd CHiME challenge is a difficult two-microphone speech recognition task with non-stationary interference. We investigate the effectiveness of state-of-the-art ASR techniques such as discriminative training, various feature transformations and deep neural networks for reverberated and noisy speech recognition, combined with a simple noise suppression method relying on prior-based binary masking with estimated angle of arrival. Moreover, we propose an augmented discriminative feature transformation that can introduce arbitrary features to a discriminative feature transform, an efficient combination method of discriminative language modeling and minimum Bayes risk decoding in an ASR post-processing stage. These techniques are effective for middle-vocabulary sub-task (Track 2) of CHiME challenge. Our performance is the best among participants.
Keyword (in Japanese) (See Japanese page) 
(in English) CHiME challenge / Noise robust ASR / Discriminative methods / Feature transformation / Prior-based binary masking / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 161, SP2013-55, pp. 13-18, July 2013.
Paper # SP2013-55 
Date of Issue 2013-07-18 (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)
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Conference Information
Committee SP IPSJ-SLP  
Conference Date 2013-07-25 - 2013-07-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Soho (togatta spa) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Speech recognition and understanding, dialog system, etc. 
Paper Information
Registration To SP 
Conference Code 2013-07-SP-SLP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Effectiveness of discriminative approaches for speech recognition under noisy environments on the 2nd CHiME Challenge 
Sub Title (in English)  
Keyword(1) CHiME challenge  
Keyword(2) Noise robust ASR  
Keyword(3) Discriminative methods  
Keyword(4) Feature transformation  
Keyword(5) Prior-based binary masking  
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1st Author's Name Yuuki Tachioka  
1st Author's Affiliation Mitsubishi Electric (Mitsubishi Electric)
2nd Author's Name Shinji Watanabe  
2nd Author's Affiliation Mitsubishi Electric Research Laboratories (MERL)
3rd Author's Name Jonathan Le Roux  
3rd Author's Affiliation Mitsubishi Electric Research Laboratories (MERL)
4th Author's Name John R Hershey  
4th Author's Affiliation Mitsubishi Electric Research Laboratories (MERL)
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Speaker Author-1 
Date Time 2013-07-25 15:10:00 
Presentation Time 30 minutes 
Registration for SP 
Paper # SP2013-55 
Volume (vol) vol.113 
Number (no) no.161 
Page pp.13-18 
#Pages
Date of Issue 2013-07-18 (SP) 


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