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Paper Abstract and Keywords
Presentation 2020-03-03 09:00
[Poster Presentation] Basic Examination on Omni-Directional Sound Source Using Facing Ultrasonic Sensor Arrays
Kyoka Okamoto, Kan Okubo (TMU) EA2019-147 SIP2019-149 SP2019-96
Abstract (in Japanese) (See Japanese page) 
(in English) Omnidirectional sound sources have been used for various purposes and have been studied for a long time. Ultrasonic sensors have been studied for transmitters and receivers in acoustic sensing and arrayed parametric
loudspeakers, and non-contact manipulation. The purpose of this study is to realize an omnidirectional sound source that is smaller and lighter than before by arranging ultrasonic sensor arrays facing each other, using nonlinearity, and using differential sound explicitly.In this report, we fabricated sound source employing a facing ultrasonic sensor array, and evaluated the frequency characteristics and directivity of the sound source experimentally. This result suggests that it is possible to create omnidirectional loudspeakers with higher design like a ring and polyhedron.
Keyword (in Japanese) (See Japanese page) 
(in English) ultrasonic sensor array / omni-directional sound source / omni-directional speaker / differential sound / acoustic crosstalk / / /  
Reference Info. IEICE Tech. Rep., vol. 119, no. 439, EA2019-147, pp. 267-271, March 2020.
Paper # EA2019-147 
Date of Issue 2020-02-24 (EA, SIP, SP) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 EA2019-147 SIP2019-149 SP2019-96

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)  
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) Basic Examination on Omni-Directional Sound Source Using Facing Ultrasonic Sensor Arrays 
Sub Title (in English)  
Keyword(1) ultrasonic sensor array  
Keyword(2) omni-directional sound source  
Keyword(3) omni-directional speaker  
Keyword(4) differential sound  
Keyword(5) acoustic crosstalk  
1st Author's Name Kyoka Okamoto  
1st Author's Affiliation Tokyo Metropolitan University (TMU)
2nd Author's Name Kan Okubo  
2nd Author's Affiliation Tokyo Metropolitan University (TMU)
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Date Time 2020-03-03 09:00:00 
Presentation Time 90 
Registration for EA 
Paper # IEICE-EA2019-147,IEICE-SIP2019-149,IEICE-SP2019-96 
Volume (vol) IEICE-119 
Number (no) no.439(EA), no.440(SIP), no.441(SP) 
Page pp.267-271 
#Pages IEICE-5 
Date of Issue IEICE-EA-2020-02-24,IEICE-SIP-2020-02-24,IEICE-SP-2020-02-24 

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