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Paper Abstract and Keywords
Presentation 2007-08-03 15:45
Evaluation of Artificial Speech Conversion System Using a Laryngectomee's Data
Keigo Nakamura, Tomoki Toda, Yoshitaka Nakajima, Hiroshi Saruwatari, Kiyohiro Shikano (NAIST) WIT2007-21
Abstract (in Japanese) (See Japanese page) 
(in English) We are investigating speech communication-aid methods for laryngectomees whose vocal folds were removed due to laryngeal cancer and so on. In our previous work, a speaking-aid system was proposed. In this sytem, speech using small sound source would be converted into much natural voice by statistical voice conversion. The system was also evaluated using artificial speech of a normal speaker. In this paper, 170 sentences of newspaper read speech are recorded by one laryngectomee using two different small sound source units. Moreover, speech utterances converted by the proposed system are evaluated by objective and subjective experiments. Rate of speech and location of pauses differ remarkably in original and target speech. This is one of the reasons for the degradation of speech quality. To reveal influences of these factors on voice conversion, voice conversion experiment is conducted using target speech in a speech corpus or other target speech rerecorded to source speech. Moreover, another voice conversion experiment performed to compare the speech quality of the laryngectomee's converted speech and speech using an electrolarynx to verify the performance of our proposed system.
Keyword (in Japanese) (See Japanese page) 
(in English) Laryngectomees / Small Sound Source / Electrolarynx / Statistical Voice Conversion / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 179, WIT2007-21, pp. 31-36, Aug. 2007.
Paper # WIT2007-21 
Date of Issue 2007-07-27 (WIT) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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)
Download PDF WIT2007-21

Conference Information
Committee WIT ITE-CE ITE-ME  
Conference Date 2007-08-03 - 2007-08-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Ochanomizu Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To WIT 
Conference Code 2007-08-WIT-ITE-CE-ITE-ME 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Evaluation of Artificial Speech Conversion System Using a Laryngectomee's Data 
Sub Title (in English)  
Keyword(1) Laryngectomees  
Keyword(2) Small Sound Source  
Keyword(3) Electrolarynx  
Keyword(4) Statistical Voice Conversion  
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1st Author's Name Keigo Nakamura  
1st Author's Affiliation Nara Institute of Science and Technology (NAIST)
2nd Author's Name Tomoki Toda  
2nd Author's Affiliation Nara Institute of Science and Technology (NAIST)
3rd Author's Name Yoshitaka Nakajima  
3rd Author's Affiliation Nara Institute of Science and Technology (NAIST)
4th Author's Name Hiroshi Saruwatari  
4th Author's Affiliation Nara Institute of Science and Technology (NAIST)
5th Author's Name Kiyohiro Shikano  
5th Author's Affiliation Nara Institute of Science and Technology (NAIST)
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Speaker Author-1 
Date Time 2007-08-03 15:45:00 
Presentation Time 30 minutes 
Registration for WIT 
Paper # WIT2007-21 
Volume (vol) vol.107 
Number (no) no.179 
Page pp.31-36 
#Pages 6 
Date of Issue 2007-07-27 (WIT) 

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