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| Presentation | 2013-12-13 15:50 Multiple sound spots generation by spatial filtering in wavenumber domain using a linear loudspeaker array Takuma Okamoto (NICT)  EA2013-94 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Novel signal processing is proposed for generating acoustically bright and dark zones at arbitrary horizontal positions using a linear loudspeaker array. Most conventional methods are based on the numerical calculation of the inverse of the spatial correlation matrix between control points and the positions of the loudspeakers. However, such methods are quite unstable because the acoustic inverse problem is very ill-conditioned. On the other hand, in the proposed method, spatial filters in the wavenumber domain are analytically derived by introducing the spectral division method and modeling sound pressures at the control line as a rectangular window corresponding to bright and dark zones. Computer simulation results show that the proposed method can generate acoustically bright and dark zones more accurately than the conventional acoustic energy difference maximization method. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Multizone / linear array of loudspeakers / spatial Fourier transform / spectral division method / spatial filtering / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 113, no. 349, EA2013-94, pp. 37-42, Dec. 2013. | |
| Paper # | EA2013-94 | |
| Date of Issue | 2013-12-06 (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 | EA2013-94 |
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| Conference Information | |
| Committee | EA |
| Conference Date | 2013-12-13 - 2013-12-14 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Satellite Plaza of Kanazawa University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General topics |
| Paper Information | |
| Registration To | EA |
| Conference Code | 2013-12-EA |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Multiple sound spots generation by spatial filtering in wavenumber domain using a linear loudspeaker array |
| Sub Title (in English) | |
| Keyword(1) | Multizone |
| Keyword(2) | linear array of loudspeakers |
| Keyword(3) | spatial Fourier transform |
| Keyword(4) | spectral division method |
| Keyword(5) | spatial filtering |
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| 1st Author's Name | Takuma Okamoto |
| 1st Author's Affiliation | National Institute of Information and Communications Technology (NICT) |
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| Speaker | Author-1 |
| Date Time | 2013-12-13 15:50:00 |
| Presentation Time | 25 minutes |
| Registration for | EA |
| Paper # | EA2013-94 |
| Volume (vol) | vol.113 |
| Number (no) | no.349 |
| Page | pp.37-42 |
| #Pages | 6 |
| Date of Issue | 2013-12-06 (EA) |
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