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Paper Abstract and Keywords
Presentation 2009-11-26 13:30
Bit Rate Reduction of Vocoder-Type Speech Coder by Temporal Redundancy
Minoru Kohata (Chiba Inst. of Tech), Motoyuki Suzuki (Tokushima Univ.), Akinori Ito, Shozo Makino (Tohoku Univ.) SP2009-63
Abstract (in Japanese) (See Japanese page) 
(in English) We formerly proposed a new segment quantization method named LZSQ, which is a modified version of the LZ coding, so that it can be applied to a continuous information source. In this paper, LZSQ is applied to a vocoder-type speech coder for reducing its bit rate, by removing temporal redundancy in coding parameters, while preserving the quality of coded speech.
In this paper, LZSQ is applied to six coding parameters of the MELP coder, which is one of the standardized vocoder-type speech coders operating at 2.4kbit/s, to reduce its bit rate as lower as possible. As the result, the total bit rate was reduced to about 1.57kbit/s.
Keyword (in Japanese) (See Japanese page) 
(in English) Low bit speech coding / Temporal redundancy / vocoder / MELP coder / Lempel-Ziv algorithm / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 308, SP2009-63, pp. 7-12, Nov. 2009.
Paper # SP2009-63 
Date of Issue 2009-11-19 (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 2009-11-26 - 2009-11-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Shizuoka University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) language acquisition, language learning, speech synthesis, speech production, prosody, etc. 
Paper Information
Registration To SP 
Conference Code 2009-11-SP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Bit Rate Reduction of Vocoder-Type Speech Coder by Temporal Redundancy 
Sub Title (in English)  
Keyword(1) Low bit speech coding  
Keyword(2) Temporal redundancy  
Keyword(3) vocoder  
Keyword(4) MELP coder  
Keyword(5) Lempel-Ziv algorithm  
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1st Author's Name Minoru Kohata  
1st Author's Affiliation chiba Institute of Technology (Chiba Inst. of Tech)
2nd Author's Name Motoyuki Suzuki  
2nd Author's Affiliation Tokushima University (Tokushima Univ.)
3rd Author's Name Akinori Ito  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
4th Author's Name Shozo Makino  
4th Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2009-11-26 13:30:00 
Presentation Time 30 minutes 
Registration for SP 
Paper # SP2009-63 
Volume (vol) vol.109 
Number (no) no.308 
Page pp.7-12 
#Pages
Date of Issue 2009-11-19 (SP) 


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