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| Presentation | 2016-03-28 13:15 [Poster Presentation] Nonaudible murmur enhancement based on non-negative tensor factorization of air- and body-conducted signals in real environments Yusuke Tajiri (NAIST), Hirokazu Kameoka (NTT), Tomoki Toda (Nagoya Univ./NAIST), Satoshi Nakamura (NAIST)  EA2015-86 SIP2015-135 SP2015-114 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Nonaudible murmur (NAM) recorded with a special body-conductive microphone called NAM microphone is one of the promising silent speech interfaces but it easily suffers from external noise signals. To effectively suppress them from the body-conducted signals, external noise monitoring using an air-conductive microphone has been proposed. The noise suppression method using time-invariant linear filtering has been successfully implemented but its performance tends to degrade in real noisy environments including many moving sound sources. To address this issue, in this report, we propose a noise suppression method based on non-negative tensor factorization (NTF) of air- and body-conducted signals. Results of experimental evaluations using the noise signals recorded in real environments show that the proposed method yields significant improvements in signal-to-noise ratio (SNR) compared to the conventional method. The results also show that the proposed method is also effective for a change of speech characteristics caused by Lombard reflex. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | silent speech communication / nonaudible murmur / external noise monitoring / non-negative matrix factorization / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 115, no. 523, SP2015-114, pp. 117-122, March 2016. | |
| Paper # | SP2015-114 | |
| Date of Issue | 2016-03-21 (EA, SIP, 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) | |
| Download PDF | EA2015-86 SIP2015-135 SP2015-114 |
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| Conference Information | |
| Committee | EA SP SIP |
| Conference Date | 2016-03-28 - 2016-03-29 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Beppu International Convention Center B-ConPlaza |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Engineering/Electro Acoustics, Speech, Signal Processing, and Related Topics |
| Paper Information | |
| Registration To | SP |
| Conference Code | 2016-03-EA-SP-SIP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Nonaudible murmur enhancement based on non-negative tensor factorization of air- and body-conducted signals in real environments |
| Sub Title (in English) | |
| Keyword(1) | silent speech communication |
| Keyword(2) | nonaudible murmur |
| Keyword(3) | external noise monitoring |
| Keyword(4) | non-negative matrix factorization |
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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 | Hirokazu Kameoka |
| 2nd Author's Affiliation | Nippon Telegraph and Telephone Corporation (NTT) |
| 3rd Author's Name | Tomoki Toda |
| 3rd Author's Affiliation | Nagoya University/Nara Institute of Science and Technology (Nagoya Univ./NAIST) |
| 4th Author's Name | Satoshi Nakamura |
| 4th Author's Affiliation | Nara Institute of Science and Technology (NAIST) |
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| Speaker | Author-1 |
| Date Time | 2016-03-28 13:15:00 |
| Presentation Time | 90 minutes |
| Registration for | SP |
| Paper # | EA2015-86, SIP2015-135, SP2015-114 |
| Volume (vol) | vol.115 |
| Number (no) | no.521(EA), no.522(SIP), no.523(SP) |
| Page | pp.117-122 |
| #Pages | 6 |
| Date of Issue | 2016-03-21 (EA, SIP, SP) |
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