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Paper Abstract and Keywords
Presentation 2018-01-23 16:20
[Invited Talk] Contactless measurement of sound pressure distribution using laser interferometer -- an overview and recent developments --
Kohei Yatabe, Kenji Ishikawa, Yasuhiro Oikawa (Waseda Univ.) US2017-102 EA2017-89
Abstract (in Japanese) (See Japanese page) 
(in English) Although sound pressure is usually measured by microphones, they inherit some unavoidable physical limitations in principle because microphones must be placed within the sound field to be measured, which causes disturbance of the field and results in measurement error. In contrast, such limitations can be avoided if a measurement method, which does not require placement of any equipment inside the sound field, is realized. One methodology for realizing that is the optical methods which have been studied in various contexts of acoustics. The mainstream of the research on optical sound visualization/measurement has been focusing on ultrasonic sound and shock waves. On the other hand, based upon recent developments, it is becoming possible to quantitatively observe an audible sound field in air without scanning. That is, some sound fields whose measurement was not possible before are becoming measurable by the new technology. In this paper, an overview of the history and principle of the optical sound measurement is presented, and a part of the recent developments achieved by the authors are introduced with the corresponding references.
Keyword (in Japanese) (See Japanese page) 
(in English) Optical sound measurement / visualization / optical interferometer / laser Doppler vibrometer / parallel phase-shifting interferometry (PPSI) / signal processing / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 399, EA2017-89, pp. 33-40, Jan. 2018.
Paper # EA2017-89 
Date of Issue 2018-01-16 (US, 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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee US EA  
Conference Date 2018-01-23 - 2018-01-24 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To EA 
Conference Code 2018-01-US-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Contactless measurement of sound pressure distribution using laser interferometer 
Sub Title (in English) an overview and recent developments 
Keyword(1) Optical sound measurement  
Keyword(2) visualization  
Keyword(3) optical interferometer  
Keyword(4) laser Doppler vibrometer  
Keyword(5) parallel phase-shifting interferometry (PPSI)  
Keyword(6) signal processing  
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Keyword(8)  
1st Author's Name Kohei Yatabe  
1st Author's Affiliation Waseda University (Waseda Univ.)
2nd Author's Name Kenji Ishikawa  
2nd Author's Affiliation Waseda University (Waseda Univ.)
3rd Author's Name Yasuhiro Oikawa  
3rd Author's Affiliation Waseda University (Waseda Univ.)
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Speaker
Date Time 2018-01-23 16:20:00 
Presentation Time 50 
Registration for EA 
Paper # IEICE-US2017-102,IEICE-EA2017-89 
Volume (vol) IEICE-117 
Number (no) no.398(US), no.399(EA) 
Page pp.107-114(US), pp.33-40(EA) 
#Pages IEICE-8 
Date of Issue IEICE-US-2018-01-16,IEICE-EA-2018-01-16 


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