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Paper Abstract and Keywords
Presentation 2015-07-18 12:10
On the intelligibility of Japanese speech reduced into and resynthesized from principal-component spaces
Takuya Kishida, Yoshitaka Nakajima, Kazuo Ueda, Gerard B. Remijn (Kyushu Univ.) HIP2015-47
Abstract (in Japanese) (See Japanese page) 
(in English) Power fluctuations in a set of critical-band filters convey sufficient information for linguistic communication, and the present study examined whether the number of fluctuations could be reduced by principal component analysis keeping high enough intelligibility of speech signals resynthesized from the obtained subspace. Spoken Japanese sentences were converted into power fluctuations in 20 critical-band filters. Principal component analyses were performed to reduce these 20-dimensional fluctuations into subspaces of 1-9 dimension(s). Speech signals were resynthesized from these subspaces as noise-vocoded speech, and their intelligibility was measured as percentages of Japanese morae identified correctly. A big leap of mora identification appeared, from 5.4% to 79.7%, as the number of subspace dimensions increased from 2 to 3. Since very similar 3-dimensional subspaces had appeared in spoken sentences of different languages in previous studies, it is very likely that essential linguistic information can be conveyed by 3-dimensional fluctuations extracted from the 20 power fluctuations.
Keyword (in Japanese) (See Japanese page) 
(in English) speech perception / principal component analysis / noise-vocoded speech / critical band / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 149, HIP2015-47, pp. 31-35, July 2015.
Paper # HIP2015-47 
Date of Issue 2015-07-11 (HIP) 
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)
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Conference Information
Committee HIP  
Conference Date 2015-07-18 - 2015-07-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyushu Sangyo University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To HIP 
Conference Code 2015-07-HIP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) On the intelligibility of Japanese speech reduced into and resynthesized from principal-component spaces 
Sub Title (in English)  
Keyword(1) speech perception  
Keyword(2) principal component analysis  
Keyword(3) noise-vocoded speech  
Keyword(4) critical band  
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1st Author's Name Takuya Kishida  
1st Author's Affiliation Kyushu University (Kyushu Univ.)
2nd Author's Name Yoshitaka Nakajima  
2nd Author's Affiliation Kyushu University (Kyushu Univ.)
3rd Author's Name Kazuo Ueda  
3rd Author's Affiliation Kyushu University (Kyushu Univ.)
4th Author's Name Gerard B. Remijn  
4th Author's Affiliation Kyushu University (Kyushu Univ.)
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Speaker Author-1 
Date Time 2015-07-18 12:10:00 
Presentation Time 20 minutes 
Registration for HIP 
Paper # HIP2015-47 
Volume (vol) vol.115 
Number (no) no.149 
Page pp.31-35 
#Pages 5 
Date of Issue 2015-07-11 (HIP) 

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