Paper Abstract and Keywords |
Presentation |
2011-06-23 16:00
Study on super directive microphone array using multiple reflected sounds Kenta Niwa, Sumitaka Sakauchi, Ken'ichi Furuya, Manabu Okamoto, Yoichi Haneda (NTT) EA2011-34 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
The purpose of this research is to develop a super directive microphone array that can pick up distant sounds, like a camera lens can zoom in on targets. If it is enable to pick up distant sounds clearly without locating microphones near target sources, it is useful to produce sounds corresponding to the highly realistic video. In conventional beamforming methods, it is difficult to segregate adjacent sound sources without varying increasing the array size and number of microphones. We propose MICAREF (MICrophone Array using REFlector), which generate beamforming filters using a reflector whose acoustical properties are known. When we locate reflector near microphone array, reflected sounds are included in transfer functions. By using the transfer functions, we found that the nulls are generated in noise directions, which is located near target source. From simulating results, we confirmed that the super directivity is formed by using MICAREF. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Microphone array / Reflected sound / Spatial correlation matrix / Beamforming / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 111, no. 89, EA2011-34, pp. 25-30, June 2011. |
Paper # |
EA2011-34 |
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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EA2011-34 |
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) |
Study on super directive microphone array using multiple 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) |
Beamforming |
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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 |
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Nippon Telegraph and Telephone Corporation (NTT) |
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Speaker |
Author-1 |
Date Time |
2011-06-23 16:00:00 |
Presentation Time |
30 minutes |
Registration for |
EA |
Paper # |
EA2011-34 |
Volume (vol) |
vol.111 |
Number (no) |
no.89 |
Page |
pp.25-30 |
#Pages |
6 |
Date of Issue |
2011-06-16 (EA) |
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