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Paper Abstract and Keywords
Presentation 2009-06-26 14:00
An MTF-based method for blindly restoring bone-conducted speech
Kota Kinugasa, Masashi Unoki, Masato Akagi (JAIST) EA2009-31
Abstract (in Japanese) (See Japanese page) 
(in English) Bone-conducted (BC) speech is more advantageous for speech communication in extremely noisy environments because of its stability against surrounding noise. However, both the sound quality and intelligibility of BC speech are very poor so that restoring BC speech is both an important task. We propose a method of blind restoration for improving BC speech based on the concept of the modulation transfer function (MTF). We investigated the relationship between air-conducted (AC) and BC speech signals by analyzing an AC/BC speech database using several measures for evaluation. We then modeled these relations between the power envelopes of AC and BC speech signals as MTF. We propose a method of determining the parameters of the MTF-based model without AC speech. Log-spectrum distortion (LSD) and speech intelligibility weighted LSD were used to evaluate the improvements in intelligibility, which are useful for human-hearing systems. The distances based on LP coefficients and mel-frequency cepstral coefficients were used to evaluate the improvements in cepstral distances that are useful for ASR systems. The results revealed that the new model can adequately improve the intelligibility of BC speech.
Keyword (in Japanese) (See Japanese page) 
(in English) Bone-conducted speech / Air-conducted speech / Modulation transfer function / Power envelope inverse filtering / Blind restoration / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 100, EA2009-31, pp. 79-84, June 2009.
Paper # EA2009-31 
Date of Issue 2009-06-18 (EA) 
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)
Download PDF EA2009-31

Conference Information
Committee EA  
Conference Date 2009-06-25 - 2009-06-26 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EA 
Conference Code 2009-06-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) An MTF-based method for blindly restoring bone-conducted speech 
Sub Title (in English)  
Keyword(1) Bone-conducted speech  
Keyword(2) Air-conducted speech  
Keyword(3) Modulation transfer function  
Keyword(4) Power envelope inverse filtering  
Keyword(5) Blind restoration  
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1st Author's Name Kota Kinugasa  
1st Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
2nd Author's Name Masashi Unoki  
2nd Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
3rd Author's Name Masato Akagi  
3rd Author's Affiliation Japan Advanced Institute of Science and Technology (JAIST)
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Speaker Author-3 
Date Time 2009-06-26 14:00:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2009-31 
Volume (vol) vol.109 
Number (no) no.100 
Page pp.79-84 
#Pages 6 
Date of Issue 2009-06-18 (EA) 

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