Paper Abstract and Keywords |
Presentation |
2010-12-10 10:00
Wave front reproduction using the spatial covariance matrices method Hiroki Hagiwara (Kogakuin Univ.), Yoshinori Takahashi (Tokyo Metro. College of Industrial Tech./Kogakuin Univ.), Kazunori Miyoshi (Kogakuin Univ.) EA2010-97 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper describes a sound-field reproduction method called a Co-Variance Method (CVM) that reproduces a spatial covariance matrix of the original sound field without information of sound-source locations. Multi-channels of reproduced sound in a listening area were made from the recorded signals in the original field according to the adoptively optimized process where the quasi-Newton method is utilized in order to get the solution. Numerical simulation results confirmed that the method works well in principle, and consequently reconstructed wavefronts are similar to the original ones. Relationship between the number of microphones or loudspeakers and reproduction errors are investigated. It is shown that the phase error diminishes as the number of pairs for microphones and loudspeakers increases more than that of positions set for the covariance analysis. Estimated source location using the minimum phase error in the reproduced field is approximately reproduced as the original source location. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Sound field control / Sound field reproduction / Multi-channel acoustics / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 110, no. 331, EA2010-97, pp. 1-6, Dec. 2010. |
Paper # |
EA2010-97 |
Date of Issue |
2010-12-03 (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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EA2010-97 |
Conference Information |
Committee |
EA |
Conference Date |
2010-12-10 - 2010-12-10 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Univ. of Tsukuba |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
General Topics |
Paper Information |
Registration To |
EA |
Conference Code |
2010-12-EA |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Wave front reproduction using the spatial covariance matrices method |
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Sound field control |
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Sound field reproduction |
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Multi-channel acoustics |
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1st Author's Name |
Hiroki Hagiwara |
1st Author's Affiliation |
Kogakuin University (Kogakuin Univ.) |
2nd Author's Name |
Yoshinori Takahashi |
2nd Author's Affiliation |
Tokyo Metropolitan College of Industrial Technology/Kogakuin University (Tokyo Metro. College of Industrial Tech./Kogakuin Univ.) |
3rd Author's Name |
Kazunori Miyoshi |
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Kogakuin University (Kogakuin Univ.) |
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Speaker |
Author-1 |
Date Time |
2010-12-10 10:00:00 |
Presentation Time |
25 minutes |
Registration for |
EA |
Paper # |
EA2010-97 |
Volume (vol) |
vol.110 |
Number (no) |
no.331 |
Page |
pp.1-6 |
#Pages |
6 |
Date of Issue |
2010-12-03 (EA) |