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Paper Abstract and Keywords
Presentation 2015-06-18 14:25
Non-Audible Murmur Enhancement Method using Air- and Body-Conductive Microphones in Noisy Environments and its Evaluation
Yusuke Tajiri, Kou Tanaka, Tomoki Toda, Graham Neubig, Sakriani Sakti, Satoshi Nakamura (NAIST) PRMU2015-42 SP2015-11 WIT2015-11
Abstract (in Japanese) (See Japanese page) 
(in English) As one of the silent speech interfaces, Non-Audible Murmur (NAM) microphone which can detect an extremely soft whispered voice has been developed. Although NAM is a promising medium for silent speech communication, its intelligibility and naturalness are significantly degraded by acoustic changes caused by body-conductive recording. To address this issue, several enhancement methods based on statistical voice conversion techniques have been proposed, and their effectiveness has been confirmed in quiet environments. However, it can be expected that NAM will be used not only in quiet, but also in noisy environments, and it is thus necessary to develop enhancement methods that will also work in these cases. In this report, we propose a framework for NAM enhancement using the NAM microphone and an air-conductive microphone. Experimental results demonstrate that the proposed framework is capable of significantly improving enhancement performance in noisy environments by considering not only the effect of noise contamination but also speaking style changes caused by the noise.
Keyword (in Japanese) (See Japanese page) 
(in English) silent speech communication / Non-Audible Murmur / statistical voice conversion / air- and body-conducted speech signal / Lombard effect / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 99, SP2015-11, pp. 59-64, June 2015.
Paper # SP2015-11 
Date of Issue 2015-06-11 (PRMU, SP, WIT) 
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 PRMU2015-42 SP2015-11 WIT2015-11

Conference Information
Committee WIT SP ASJ-H PRMU  
Conference Date 2015-06-18 - 2015-06-19 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SP 
Conference Code 2015-06-WIT-SP-H-PRMU 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Non-Audible Murmur Enhancement Method using Air- and Body-Conductive Microphones in Noisy Environments and its Evaluation 
Sub Title (in English)  
Keyword(1) silent speech communication  
Keyword(2) Non-Audible Murmur  
Keyword(3) statistical voice conversion  
Keyword(4) air- and body-conducted speech signal  
Keyword(5) Lombard effect  
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1st Author's Name Yusuke Tajiri  
1st Author's Affiliation Nara Institute of Science and Technology (NAIST)
2nd Author's Name Kou Tanaka  
2nd Author's Affiliation Nara Institute of Science and Technology (NAIST)
3rd Author's Name Tomoki Toda  
3rd Author's Affiliation Nara Institute of Science and Technology (NAIST)
4th Author's Name Graham Neubig  
4th Author's Affiliation Nara Institute of Science and Technology (NAIST)
5th Author's Name Sakriani Sakti  
5th Author's Affiliation Nara Institute of Science and Technology (NAIST)
6th Author's Name Satoshi Nakamura  
6th Author's Affiliation Nara Institute of Science and Technology (NAIST)
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Speaker Author-1 
Date Time 2015-06-18 14:25:00 
Presentation Time 25 minutes 
Registration for SP 
Paper # PRMU2015-42, SP2015-11, WIT2015-11 
Volume (vol) vol.115 
Number (no) no.98(PRMU), no.99(SP), no.100(WIT) 
Page pp.59-64 
#Pages 6 
Date of Issue 2015-06-11 (PRMU, SP, WIT) 

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