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) |
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PRMU2015-42 SP2015-11 WIT2015-11 |
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