Paper Abstract and Keywords |
Presentation |
2020-03-03 12:35
Real-time visualization of reverberation time using frequency domain variants of velvet noise Hideki Kawahara (Wakayama Univ.), Ken-Ichi Sakakibara (Health Science Univ. Hokkaido), Mitsunori Mizumachi (Kyushu Inst. Tech.), Masanori Morise (Meiji Univ.), Hideki Banno (Meijo Univ.) EA2019-159 SIP2019-161 SP2019-108 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
We introduce a wavelet-based method for real-time visualization of reverberation time for extending acoustic measurement based on the frequency domain variant of velvet noise (FVN). For application to acoustic measurement, we introduced a method to construct orthogonal set of sequences by allocating individual FVNs with orthogonal binary sequences for weighting. The proposed set of sequences enable simultaneous measurement of multiple acoustic paths. The mixture of the set also enables one-shot measurement of linear and non-linear responses of an acoustic system. In addition to these merit, we introduce a method to calculate the four-times longer impulse response than the allocation interval. We discuss about integration of the proposed method to the interactive and real-time acoustic measurement tool based on FVN. We also discuss about failure of group-delay for estimating reverberation time from the acoustic impulse response. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
impulse response / frequency domain variant of velvet noise / reverberation time / group delay / wavelet transform / / / |
Reference Info. |
IEICE Tech. Rep., vol. 119, no. 439, EA2019-159, pp. 337-342, March 2020. |
Paper # |
EA2019-159 |
Date of Issue |
2020-02-24 (EA, SIP, SP) |
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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EA2019-159 SIP2019-161 SP2019-108 |
Conference Information |
Committee |
SP EA SIP |
Conference Date |
2020-03-02 - 2020-03-03 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Okinawa Industry Support Center |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
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Paper Information |
Registration To |
EA |
Conference Code |
2020-03-SP-EA-SIP |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Real-time visualization of reverberation time using frequency domain variants of velvet noise |
Sub Title (in English) |
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Keyword(1) |
impulse response |
Keyword(2) |
frequency domain variant of velvet noise |
Keyword(3) |
reverberation time |
Keyword(4) |
group delay |
Keyword(5) |
wavelet transform |
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1st Author's Name |
Hideki Kawahara |
1st Author's Affiliation |
Wakayama University (Wakayama Univ.) |
2nd Author's Name |
Ken-Ichi Sakakibara |
2nd Author's Affiliation |
Health Science University of Hokkaido (Health Science Univ. Hokkaido) |
3rd Author's Name |
Mitsunori Mizumachi |
3rd Author's Affiliation |
Kyushu Institute of Technology (Kyushu Inst. Tech.) |
4th Author's Name |
Masanori Morise |
4th Author's Affiliation |
Meiji Universityi (Meiji Univ.) |
5th Author's Name |
Hideki Banno |
5th Author's Affiliation |
Meijo University (Meijo Univ.) |
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Speaker |
Author-1 |
Date Time |
2020-03-03 12:35:00 |
Presentation Time |
25 minutes |
Registration for |
EA |
Paper # |
EA2019-159, SIP2019-161, SP2019-108 |
Volume (vol) |
vol.119 |
Number (no) |
no.439(EA), no.440(SIP), no.441(SP) |
Page |
pp.337-342 |
#Pages |
6 |
Date of Issue |
2020-02-24 (EA, SIP, SP) |
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