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Paper Abstract and Keywords
Presentation 2013-12-19 14:25
Efficient Phoneme Set Design Using Phonetic Decision Tree in Dialogue-Based English CALL Systems for Japanese Students
Xiaoyun Wang (Doshisha Univ.), Jinsong Zhang (Beijing Language and Culture Univ.), Masafumi Nishida, Seiichi Yamamoto (Doshisha Univ.) SP2013-84
Abstract (in Japanese) (See Japanese page) 
(in English) Taking consideration of the characteristics of users for dialogue-based CALL systems which aim at eliciting more speech productions in order to improve their speaking skill, we propose a reduced phoneme set consisting of more coarsely classified phonemes instead of the canonical phoneme set of a second language. This reduced phoneme set provides an inherently more appropriate model for error-prone pronunciations by second language speakers. In this study, we used a phonetic decision tree based top-down sequential splitting method to generate the coarse phoneme set. We then applied the proposed method to the task of recognizing English speech produced by Japanese students. Experimental results showed that a speech recognizer using the reduced phoneme set not only achieved higher recognition accuracy but also worked at higher speeds than that of the canonical phoneme set.
Keyword (in Japanese) (See Japanese page) 
(in English) Phoneme set / Phonetic decision tree (PDT) / Dialogue-based English CALL System / / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 366, SP2013-84, pp. 47-51, Dec. 2013.
Paper # SP2013-84 
Date of Issue 2013-12-12 (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 2013-12-19 - 2013-12-20 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English) 15th Symposium on Spoken Language 
Paper Information
Registration To SP 
Conference Code 2013-12-SP-SLP 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Efficient Phoneme Set Design Using Phonetic Decision Tree in Dialogue-Based English CALL Systems for Japanese Students 
Sub Title (in English)  
Keyword(1) Phoneme set  
Keyword(2) Phonetic decision tree (PDT)  
Keyword(3) Dialogue-based English CALL System  
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1st Author's Name Xiaoyun Wang  
1st Author's Affiliation Doshisha University (Doshisha Univ.)
2nd Author's Name Jinsong Zhang  
2nd Author's Affiliation Beijing Language and Culture University (Beijing Language and Culture Univ.)
3rd Author's Name Masafumi Nishida  
3rd Author's Affiliation Doshisha University (Doshisha Univ.)
4th Author's Name Seiichi Yamamoto  
4th Author's Affiliation Doshisha University (Doshisha Univ.)
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Speaker Author-1 
Date Time 2013-12-19 14:25:00 
Presentation Time 25 minutes 
Registration for SP 
Paper # SP2013-84 
Volume (vol) vol.113 
Number (no) no.366 
Page pp.47-51 
#Pages 5 
Date of Issue 2013-12-12 (SP) 

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