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| Presentation | 2014-03-28 14:50 Enhancement of speech captured with a unidiractional microphone-array Yuki Abe, Masaru Niu, Takeshi Saitou, Masato Miyoshi (Kanazawa Univ.)  EA2013-122 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | In order to make clear recordings of distant speech, we are studying the following technologies: (1) Forming a steerable spotlight-shaped directional beam to capture distant-speech clearly, and (2) Enhancing a captured speech signal to shorten the aperture length of a microphone-array. In this report, first a 2D microphone-array is proposed to produce the directional beam. Then, a post processing is examined to enhance a speech signal captured with an array of a short aperture length. This processing consists of noise reduction GSS (generalized spectral subtraction) and bass-augmentation VB (virtual bass) based on psychoacoustic phenomenon “missing fundamental.” According to CMOS (comparison mean opinion score) experimental results, the quality of VB-processed speech, when captured with an array of a short aperture length covering 0.7-to-4 kHz, was almost the same as that of non-processed speech captured with an array of an aperture length covering 0.3-to-4 kHz. |
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| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | microphone array / directional beam / aperture length / virtual bass / generalized spectral subtraction / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, no. 503, EA2013-122, pp. 13-18, March 2014. | |
| Paper # | EA2013-122 | |
| Date of Issue | 2014-03-21 (EA) | |
| 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 | EA2013-122 |
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| Conference Information | |
| Committee | EA |
| Conference Date | 2014-03-28 - 2014-03-28 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | NHK Science & Technology Research Labs. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General topics |
| Paper Information | |
| Registration To | EA |
| Conference Code | 2014-03-EA |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Enhancement of speech captured with a unidiractional microphone-array |
| Sub Title (in English) | |
| Keyword(1) | microphone array |
| Keyword(2) | directional beam |
| Keyword(3) | aperture length |
| Keyword(4) | virtual bass |
| Keyword(5) | generalized spectral subtraction |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Yuki Abe |
| 1st Author's Affiliation | Kanazawa University (Kanazawa Univ.) |
| 2nd Author's Name | Masaru Niu |
| 2nd Author's Affiliation | Kanazawa University (Kanazawa Univ.) |
| 3rd Author's Name | Takeshi Saitou |
| 3rd Author's Affiliation | Kanazawa University (Kanazawa Univ.) |
| 4th Author's Name | Masato Miyoshi |
| 4th Author's Affiliation | Kanazawa University (Kanazawa Univ.) |
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| Speaker | Author-1 |
| Date Time | 2014-03-28 14:50:00 |
| Presentation Time | 25 minutes |
| Registration for | EA |
| Paper # | EA2013-122 |
| Volume (vol) | vol.113 |
| Number (no) | no.503 |
| Page | pp.13-18 |
| #Pages | 6 |
| Date of Issue | 2014-03-21 (EA) |
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