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Paper Abstract and Keywords
Presentation 2007-05-31 11:30
A study on multimodal speech recognition for spoken dialogue systems
Shunsuke Takayama, Toshihide Matsuo, Koji Iwano, Sadaoki Furui (Tokyo Tech) SP2007-4
Abstract (in Japanese) (See Japanese page) 
(in English) This paper describes speaker-independent multimodal speech recognition toward constructing multimodal spoken dialogue systems. In order to build a multimodal speech recognition system, an audio-visual speech database was first collected from 25 male speakers. In our system, a multi-stream HMM technique is used for integrating audio and visual information. We propose a multi-stream HMM construction method where audio-only and visual-only models are separately trained and then integrated at the state level. In this framework, the state tying structure of the target audio-visual model is inherited from the audio-only triphone HMM. Experimental results show that the proposed method is effective in various noise conditions. We also compared two visual features, optical-flow-based features and PCA(Principal Component Analysis)-based features, in our recognition framework. The results show that the optical-flow-based features yield better performance than the PCA-based features.
Keyword (in Japanese) (See Japanese page) 
(in English) multimodal speech recognition / dialogue speech / speaker independent / multi-stream HMM / model construction method / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 77, SP2007-4, pp. 19-24, May 2007.
Paper # SP2007-4 
Date of Issue 2007-05-24 (SP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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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 2007-05-31 - 2007-05-31 
Place (in Japanese) (See Japanese page) 
Place (in English) ATR 
Topics (in Japanese) (See Japanese page) 
Topics (in English) etc. 
Paper Information
Registration To SP 
Conference Code 2007-05-SP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on multimodal speech recognition for spoken dialogue systems 
Sub Title (in English)  
Keyword(1) multimodal speech recognition  
Keyword(2) dialogue speech  
Keyword(3) speaker independent  
Keyword(4) multi-stream HMM  
Keyword(5) model construction method  
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1st Author's Name Shunsuke Takayama  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
2nd Author's Name Toshihide Matsuo  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
3rd Author's Name Koji Iwano  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
4th Author's Name Sadaoki Furui  
4th Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
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Speaker Author-3 
Date Time 2007-05-31 11:30:00 
Presentation Time 30 minutes 
Registration for SP 
Paper # SP2007-4 
Volume (vol) vol.107 
Number (no) no.77 
Page pp.19-24 
#Pages
Date of Issue 2007-05-24 (SP) 


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