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| Presentation | 2010-05-26 13:00 Improvement of speech recognition performance based on the conversion of Lombard features Yuji Uemura, Masanori Morise, Takanobu Nishiura (Ritsumeikan Univ.)  EA2010-1 SIP2010-1 SP2010-1 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | The automatic speech recognition (ASR) under noisy environments is focused as one of the challenging topics. Especially, the talking-speech under noisy environment much distorts compared with neutral talking-speech under quiet one. This distortion is called Lombard effects, and ASR performance degrades by them. They should strongly occur, subject to no auditory feedback for speaker. In conventional research, their features tend to be ascent of power, ascent of fundamental frequency (F0), flat of spectral envelope and higher-frequency shift of the first order formant frequency (F1) and the second order formant frequency (F2). The ASR performance without any especially operations degrades by affecting such features. In order to analyze Lombard features, we recorded Lombard speech and constracted Lombard speech corpus. We discriminate between neutral speech and Lombard speech used by analyzed features. We conducted subjective evaluation and objective evaluation. As a result, we confirmed discrimination rate over $80$ \% both evaluations. In this paper, we propose the new approach based on the voice conversion towards neutral speech from Lombard speech. We carried out evaluation experiments. As a result of experiments, we confirmed the ASR performance increases to $10$ \% for female speech and $4$ \% for male one with proposed method. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Lombard effects / ASR / recognition performance / Lombard features / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 110, no. 56, SP2010-1, pp. 1-6, May 2010. | |
| Paper # | SP2010-1 | |
| Date of Issue | 2010-05-19 (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 | EA2010-1 SIP2010-1 SP2010-1 |
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| Conference Information | |
| Committee | SP EA SIP |
| Conference Date | 2010-05-26 - 2010-05-27 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Konan Univ. (Hirao Seminar House) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Speech, Engineering/Electro Acoustics, Signal Processing，and Related Topics |
| Paper Information | |
| Registration To | SP |
| Conference Code | 2010-05-SP-EA-SIP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Improvement of speech recognition performance based on the conversion of Lombard features |
| Sub Title (in English) | |
| Keyword(1) | Lombard effects |
| Keyword(2) | ASR |
| Keyword(3) | recognition performance |
| Keyword(4) | Lombard features |
| Keyword(5) | |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Yuji Uemura |
| 1st Author's Affiliation | Ritsumeikan University (Ritsumeikan Univ.) |
| 2nd Author's Name | Masanori Morise |
| 2nd Author's Affiliation | Ritsumeikan University (Ritsumeikan Univ.) |
| 3rd Author's Name | Takanobu Nishiura |
| 3rd Author's Affiliation | Ritsumeikan University (Ritsumeikan Univ.) |
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| Speaker | Author-1 |
| Date Time | 2010-05-26 13:00:00 |
| Presentation Time | 25 minutes |
| Registration for | SP |
| Paper # | EA2010-1, SIP2010-1, SP2010-1 |
| Volume (vol) | vol.110 |
| Number (no) | no.54(EA), no.55(SIP), no.56(SP) |
| Page | pp.1-6 |
| #Pages | 6 |
| Date of Issue | 2010-05-19 (EA, SIP, SP) |
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