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Paper Abstract and Keywords
Presentation 2010-11-19 09:45
Method of Speech Signal Decomposition into Periodic Component and Aperiodic Component Considering Changes in Pitch and Power
Masahiro Morita, Takehiko Kagoshima (Toshiba) SP2010-79
Abstract (in Japanese) (See Japanese page) 
(in English) For the purpose of improving the voice quality of text-to-speech (TTS), we have been considering ways to decompose a speech signal containing periodic component, generated by periodic glottal cycle, and aperiodic component, generated by noise-like signal, into respective components. To realize a human-like natural speech by TTS, an important point would be to reproduce appropriately the periodic and aperiodic components, which are mixed in the natural speech, at synthesis time. As a basis for this purpose, a good method to decompose the speech signal into periodic and aperiodic components with high precision is required. However, since the component that should be extracted as periodic component may not be precisely periodic because of time-changes in pitch, power, etc., such component tended to leak into aperiodic component by conventional methods that assume periodic components to be precisely periodic. So, this report introduces a new decomposition method that takes such changes in pitch and power into account. And then it shows the result of evaluation for the proposed method using synthesized artificial signal and an example of decomposition by this method applied to a natural speech.
Keyword (in Japanese) (See Japanese page) 
(in English) speech signal / periodic component / aperiodic component / decomposition / pitch / power / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 297, SP2010-79, pp. 59-64, Nov. 2010.
Paper # SP2010-79 
Date of Issue 2010-11-11 (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 2010-11-18 - 2010-11-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Aichi Prefectural Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SP 
Conference Code 2010-11-SP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Method of Speech Signal Decomposition into Periodic Component and Aperiodic Component Considering Changes in Pitch and Power 
Sub Title (in English)  
Keyword(1) speech signal  
Keyword(2) periodic component  
Keyword(3) aperiodic component  
Keyword(4) decomposition  
Keyword(5) pitch  
Keyword(6) power  
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Keyword(8)  
1st Author's Name Masahiro Morita  
1st Author's Affiliation Toshiba Corporation (Toshiba)
2nd Author's Name Takehiko Kagoshima  
2nd Author's Affiliation Toshiba Corporation (Toshiba)
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Speaker Author-1 
Date Time 2010-11-19 09:45:00 
Presentation Time 30 minutes 
Registration for SP 
Paper # SP2010-79 
Volume (vol) vol.110 
Number (no) no.297 
Page pp.59-64 
#Pages 6 
Date of Issue 2010-11-11 (SP) 

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