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Paper Abstract and Keywords
Presentation 2008-07-18 09:40
Parameter sharing and its effects for structural speech recognition
Ryo Matsuura, Daisuke Saito, Satoshi Asakawa, Nobuaki Minematsu, Keikichi Hirose (Tokyo Univ.) SP2008-52
Abstract (in Japanese) (See Japanese page) 
(in English) Acoustic features in speech are affected inevitably by non-linguistic factors, which easily decrease speech recognition performance. Recently, we proposed a structural and speaker-invariant representation of speech, where speech substances are completely discarded and speech contrasts are only extracted. After converting an input speech stream into N feature distributions, every distance between any pair of the distributions is calculated. If aword has N distributions, its structure model comes to have NC2 parameters (edge length). If the vocabulary is
comprised of L words, a recognition system will have L×NC2 parameters. In this report, considering that the structural representation is speaker-invariant, we test it only with a single training speaker. To improve the robustness for variability of speaking styles, parameter sharing is introduced and its effect is examined. After a similar experiment with HMMs, we discuss whether linguistic information is encoded in speech substances or speech contrasts.
Keyword (in Japanese) (See Japanese page) 
(in English) structural representation / speech recognition / parameter sharing / clustering / substance and contrast / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 142, SP2008-52, pp. 55-60, July 2008.
Paper # SP2008-52 
Date of Issue 2008-07-10 (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  
Conference Date 2008-07-17 - 2008-07-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Iwate Prefectural Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Speech Recognition, Speech Understanding, Speech Dialogue, etc. 
Paper Information
Registration To SP 
Conference Code 2008-07-SP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Parameter sharing and its effects for structural speech recognition 
Sub Title (in English)  
Keyword(1) structural representation  
Keyword(2) speech recognition  
Keyword(3) parameter sharing  
Keyword(4) clustering  
Keyword(5) substance and contrast  
Keyword(6)  
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Keyword(8)  
1st Author's Name Ryo Matsuura  
1st Author's Affiliation Tokyo University (Tokyo Univ.)
2nd Author's Name Daisuke Saito  
2nd Author's Affiliation Tokyo University (Tokyo Univ.)
3rd Author's Name Satoshi Asakawa  
3rd Author's Affiliation Tokyo University (Tokyo Univ.)
4th Author's Name Nobuaki Minematsu  
4th Author's Affiliation Tokyo University (Tokyo Univ.)
5th Author's Name Keikichi Hirose  
5th Author's Affiliation Tokyo University (Tokyo Univ.)
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Speaker Author-1 
Date Time 2008-07-18 09:40:00 
Presentation Time 30 minutes 
Registration for SP 
Paper # SP2008-52 
Volume (vol) vol.108 
Number (no) no.142 
Page pp.55-60 
#Pages 6 
Date of Issue 2008-07-10 (SP) 

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