Paper Abstract and Keywords |
Presentation |
2018-07-24 13:00
[Poster Presentation]
Effectiveness of BMN-SS impulse response measurement method for reverberation time measurement Yohei Iiyama, Yutaka Kaneda (Tokyo Denki Univ) EA2018-6 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
The reverberation time is calculated from a room impulse response.
In this case, the steady power level of the noise component is required to be less than $-45$ dB relative to the maximum instantaneous power of the impulse response in each octave band.
However, when using a conventional impulse response measurement signal such as a TSP signal, the noise level depends on the frequency band.
For this reason, a measurement using a long-time signal is necessary to satisfy the required noise level in all frequency bands.
Therefore, we proposed a band-wise minimum noise swept sine (BMN-SS) signal that can control the noise level of each octave band in the measurement result.
In this paper, we present the method of shortening the measurement time of the reverberation time using this BMN-SS signal and the measurement results in a real sound field.
Using the BMN-SS signal, we confirmed the measurement time shortening by 1/200 of TSP signal and 1/4 of the Log-SS signal under the experimental condition stated in this paper. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
reverberation time measurement / impulse response / swept sine signal / octave band / noise level / / / |
Reference Info. |
IEICE Tech. Rep., vol. 118, no. 149, EA2018-6, pp. 29-34, July 2018. |
Paper # |
EA2018-6 |
Date of Issue |
2018-07-17 (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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EA2018-6 |
Conference Information |
Committee |
EA ASJ-H ASJ-AA |
Conference Date |
2018-07-24 - 2018-07-25 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Hokkaido Univ. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Engineering/Electro Acoustics, Psychological and Physiological Acoustics, Architectural Acoustics, Education in Acoustics, and Related Topics |
Paper Information |
Registration To |
EA |
Conference Code |
2018-07-EA-H-AA |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Effectiveness of BMN-SS impulse response measurement method for reverberation time measurement |
Sub Title (in English) |
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Keyword(1) |
reverberation time measurement |
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impulse response |
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swept sine signal |
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octave band |
Keyword(5) |
noise level |
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1st Author's Name |
Yohei Iiyama |
1st Author's Affiliation |
Tokyo Denki University (Tokyo Denki Univ) |
2nd Author's Name |
Yutaka Kaneda |
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Tokyo Denki University (Tokyo Denki Univ) |
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Speaker |
Author-1 |
Date Time |
2018-07-24 13:00:00 |
Presentation Time |
90 minutes |
Registration for |
EA |
Paper # |
EA2018-6 |
Volume (vol) |
vol.118 |
Number (no) |
no.149 |
Page |
pp.29-34 |
#Pages |
6 |
Date of Issue |
2018-07-17 (EA) |
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