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| Presentation | 2012-05-24 11:10 Voice activity detection in MTF-based power envelope restoration Masashi Unoki (JAIST), Xugang Lu (NICT), Rico Petrick (TUD), Shota Morita, Masato Akagi (JAIST), Ruediger Hoffmann (TUD)  EA2012-2 SIP2012-2 SP2012-2 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper reports comparative evaluations of conventional voice activity detection (VAD) methods in reverberant environments. Both conventional (thresholding) and standard (G.729 and AMR) methods are discussed. In general, these methods work well under clean conditions, but their performance is drastically affected by reverberation. Preliminary comparative evaluations showed that the false acceptance rate (FAR) is significantly increased due to the false rejection rate (FRR) being moderately increased by reverberation. We therefore developed a method using MTF-based power envelope restoration to improve the robustness of VAD in reverberant environments. This restoration method can blindly restore the power envelope of reverberant speech based on the MTF concept. The proposed method consists of an MTF-based restoration method as the front end and a conventional VAD method as the final decision. Experimental results demonstrated that the proposed method is superior to conventional methods with regard to robustness and providing accurate VAD (reducing both FAR and FRR) in reverberant environments. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Voice activity detection / Reverberation / Modulation transfer function / Power envelope restoration / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 112, no. 47, EA2012-2, pp. 7-12, May 2012. | |
| Paper # | EA2012-2 | |
| Date of Issue | 2012-05-17 (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 | EA2012-2 SIP2012-2 SP2012-2 |
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| Conference Information | |
| Committee | EA SP SIP |
| Conference Date | 2012-05-24 - 2012-05-25 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Osaka Univ. Nakanoshima Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Speech and Acoustic Signal Processing, Speech, and Related Topics |
| Paper Information | |
| Registration To | EA |
| Conference Code | 2012-05-EA-SP-SIP |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Voice activity detection in MTF-based power envelope restoration |
| Sub Title (in English) | |
| Keyword(1) | Voice activity detection |
| Keyword(2) | Reverberation |
| Keyword(3) | Modulation transfer function |
| Keyword(4) | Power envelope restoration |
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| Keyword(6) | |
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| 1st Author's Name | Masashi Unoki |
| 1st Author's Affiliation | Japan Advanced Institute of Science and Technology (JAIST) |
| 2nd Author's Name | Xugang Lu |
| 2nd Author's Affiliation | National Institute of Information and Communications Technology (NICT) |
| 3rd Author's Name | Rico Petrick |
| 3rd Author's Affiliation | Dresden University of Technology (TUD) |
| 4th Author's Name | Shota Morita |
| 4th Author's Affiliation | Japan Advanced Institute of Science and Technology (JAIST) |
| 5th Author's Name | Masato Akagi |
| 5th Author's Affiliation | Japan Advanced Institute of Science and Technology (JAIST) |
| 6th Author's Name | Ruediger Hoffmann |
| 6th Author's Affiliation | Dresden University of Technology (TUD) |
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| Speaker | Author-1 |
| Date Time | 2012-05-24 11:10:00 |
| Presentation Time | 25 minutes |
| Registration for | EA |
| Paper # | EA2012-2, SIP2012-2, SP2012-2 |
| Volume (vol) | vol.112 |
| Number (no) | no.47(EA), no.48(SIP), no.49(SP) |
| Page | pp.7-12 |
| #Pages | 6 |
| Date of Issue | 2012-05-17 (EA, SIP, SP) |
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