Paper Abstract and Keywords |
Presentation |
2008-12-09 10:00
Two-channel input speech recognition using sparsness-based blind source separation Kenta Nishiki, Yosuke Izumi (Univ. of Tokyo), Shinji Watanabe (NTT), Takuya Nishimoto, Nobutaka Ono, Shigeki Sagayama (Univ. of Tokyo) NLC2008-24 SP2008-79 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper discusses a two-channel input speech recognition using a sparsness-based blind source separation. The target speech is extracted from observed signals under diffusive noises (e.g. reverberation) by the source separation technique where a time-frequency mask is dynamically designed for speech separation using the EM algorithm. Cepstral Mean Normalization is exploited to reduce a remaining distortions or a newly introduced distortions in separated speech features. In a connected digit recognition task with multiple noise sources, the proposed method drastically improved the word accuracy in anechoic and reverberant environments. The proposed method achieved higher performance especially in a reverberant environment than conventional methods. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
sparsness / 2-channel blind source separation / reverberation / speech recognition / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 108, no. 338, SP2008-79, pp. 1-6, Dec. 2008. |
Paper # |
SP2008-79 |
Date of Issue |
2008-12-02 (NLC, 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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NLC2008-24 SP2008-79 |
Conference Information |
Committee |
SP NLC |
Conference Date |
2008-12-09 - 2008-12-10 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Waseda Univ. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
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Paper Information |
Registration To |
SP |
Conference Code |
2008-12-SP-NLC |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Two-channel input speech recognition using sparsness-based blind source separation |
Sub Title (in English) |
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Keyword(1) |
sparsness |
Keyword(2) |
2-channel blind source separation |
Keyword(3) |
reverberation |
Keyword(4) |
speech recognition |
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1st Author's Name |
Kenta Nishiki |
1st Author's Affiliation |
University of Tokyo (Univ. of Tokyo) |
2nd Author's Name |
Yosuke Izumi |
2nd Author's Affiliation |
University of Tokyo (Univ. of Tokyo) |
3rd Author's Name |
Shinji Watanabe |
3rd Author's Affiliation |
Nippon Telegraph and Telephone Corporation (NTT) |
4th Author's Name |
Takuya Nishimoto |
4th Author's Affiliation |
University of Tokyo (Univ. of Tokyo) |
5th Author's Name |
Nobutaka Ono |
5th Author's Affiliation |
University of Tokyo (Univ. of Tokyo) |
6th Author's Name |
Shigeki Sagayama |
6th Author's Affiliation |
University of Tokyo (Univ. of Tokyo) |
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Speaker |
Author-1 |
Date Time |
2008-12-09 10:00:00 |
Presentation Time |
25 minutes |
Registration for |
SP |
Paper # |
NLC2008-24, SP2008-79 |
Volume (vol) |
vol.108 |
Number (no) |
no.337(NLC), no.338(SP) |
Page |
pp.1-6 |
#Pages |
6 |
Date of Issue |
2008-12-02 (NLC, SP) |
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