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| Presentation | 2010-12-20 16:30 Noise suppression method based on noise bias-residual decomposition and optimization Masakiyo Fujimoto, Shinji Watanabe, Tomohiro Nakatani (NTT Corp.)  NLC2010-18 SP2010-91 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In this paper, we propose a non-stationary noise estimation method based on bias-residual component decomposition, and show that the proposed method improved speech recognition accuracy compared with the noise estimation methods without component decomposition. The proposed decomposition method clarifies the role of each component, thus enabling us to apply a suitable parameter estimation technique to each component. In this paper, the bias component is estimated by the EM algorithm with the entire observed signal sequence. On the other hand, the residual component is sequentially estimated by multiplying the extended Kalman filter with the auto-regressive process. In addition, the proposed noise estimation. As further improvement, we also evaluate the speech recognition by using a minimum-time frame word error. It minimizes word error rate by combining various hypotheses given by multiple parameter settings of the proposed noise estimation. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | speech recognition / noise suppression, / non-stationary noise / component decomposition / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 110, no. 357, SP2010-91, pp. 43-48, Dec. 2010. | |
| Paper # | SP2010-91 | |
| Date of Issue | 2010-12-13 (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) | |
| Download PDF | NLC2010-18 SP2010-91 |
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| Conference Information | |
| Committee | NLC SP |
| Conference Date | 2010-12-20 - 2010-12-21 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | National Olympics Memorial Youth Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Information Access, Speech and Language Processing, etc. |
| Paper Information | |
| Registration To | SP |
| Conference Code | 2010-12-NLC-SP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Noise suppression method based on noise bias-residual decomposition and optimization |
| Sub Title (in English) | |
| Keyword(1) | speech recognition |
| Keyword(2) | noise suppression, |
| Keyword(3) | non-stationary noise |
| Keyword(4) | component decomposition |
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| 1st Author's Name | Masakiyo Fujimoto |
| 1st Author's Affiliation | NTT Communication Science Laboratories, NTT Corporation (NTT Corp.) |
| 2nd Author's Name | Shinji Watanabe |
| 2nd Author's Affiliation | NTT Communication Science Laboratories, NTT Corporation (NTT Corp.) |
| 3rd Author's Name | Tomohiro Nakatani |
| 3rd Author's Affiliation | NTT Communication Science Laboratories, NTT Corporation (NTT Corp.) |
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| Speaker | Author-1 |
| Date Time | 2010-12-20 16:30:00 |
| Presentation Time | 25 minutes |
| Registration for | SP |
| Paper # | NLC2010-18, SP2010-91 |
| Volume (vol) | vol.110 |
| Number (no) | no.356(NLC), no.357(SP) |
| Page | pp.43-48 |
| #Pages | 6 |
| Date of Issue | 2010-12-13 (NLC, SP) |
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