Paper Abstract and Keywords |
Presentation |
2011-06-23 16:30
Picking up sounds at different distances with microphone array using reflected sounds Kenta Niwa, Sumitaka Sakauchi, Ken'ichi Furuya, Manabu Okamoto, Yoichi Haneda (NTT) EA2011-35 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
The purpose of this research is to pick up target sounds at different distances in same direction with a microphone array. It is useful for for facilitating audio teleconferencing, speech recognition, and natural human-robot communication. In conventional beamforming methods, it is mainly discussed about the directivity controls, which emphasize and suppress the sounds arrived from arbitrary direction. Assuming that there is no reflector near microphone array, it is difficult to segregate sound sources in in same direction since the transfer function between a sound source and microphones is not depended on distances.
In this paper, we propose to pick up target sounds at arbitrary distances in same direction by forming filters considering the reflected sounds arrived from the reflector located near microphone array. By locating reflector whose acoustical properties are known, we can exploit the differences in transfer functions corresponding to the distances
such as arrival direction and time of reflected sounds. From simulating experiments, we confirmed that the proposed method is effective to pick up sounds at different distances in same direction. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Microphone array / Reflected sound / Spatial correlation matrix / Directivity control / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 111, no. 89, EA2011-35, pp. 31-36, June 2011. |
Paper # |
EA2011-35 |
Date of Issue |
2011-06-16 (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) |
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EA2011-35 |
Conference Information |
Committee |
EA |
Conference Date |
2011-06-23 - 2011-06-24 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Health Sci. Univ. of Hokkaido |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Engineering/Electro Acoustics, Musical Acoustics, Psychological and Physiological Acoustics, and Related Topics |
Paper Information |
Registration To |
EA |
Conference Code |
2011-06-EA |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Picking up sounds at different distances with microphone array using reflected sounds |
Sub Title (in English) |
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Keyword(1) |
Microphone array |
Keyword(2) |
Reflected sound |
Keyword(3) |
Spatial correlation matrix |
Keyword(4) |
Directivity control |
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1st Author's Name |
Kenta Niwa |
1st Author's Affiliation |
Nippon Telegraph and Telephone Corporation (NTT) |
2nd Author's Name |
Sumitaka Sakauchi |
2nd Author's Affiliation |
Nippon Telegraph and Telephone Corporation (NTT) |
3rd Author's Name |
Ken'ichi Furuya |
3rd Author's Affiliation |
Nippon Telegraph and Telephone Corporation (NTT) |
4th Author's Name |
Manabu Okamoto |
4th Author's Affiliation |
Nippon Telegraph and Telephone Corporation (NTT) |
5th Author's Name |
Yoichi Haneda |
5th Author's Affiliation |
Nippon Telegraph and Telephone Corporation (NTT) |
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Speaker |
Author-1 |
Date Time |
2011-06-23 16:30:00 |
Presentation Time |
30 minutes |
Registration for |
EA |
Paper # |
EA2011-35 |
Volume (vol) |
vol.111 |
Number (no) |
no.89 |
Page |
pp.31-36 |
#Pages |
6 |
Date of Issue |
2011-06-16 (EA) |
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