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Paper Abstract and Keywords
Presentation 2021-07-15 11:20
Beam Control Based on Multi-phased Array for Parametric Array Loudspeaker
Yuting Geng, Haonan Wang (Ritsumeikan Univ.), Masato Nakayama (Osaka Sangyo Univ.), Takanobu Nishiura (Ritsumeikan Univ.) EA2021-5
Abstract (in Japanese) (See Japanese page) 
(in English) Parametric array loudspeaker (PAL) can achieve a super directivity utilizing the straightness of ultrasounds. How- ever, there is a tendency that the demodulated sound-beam is easy to spread in small-scale PALs. In this paper, we proposed a beam control method for small-scale PAL using multi-phased array. Specifically, the demodulated sound-beam is controlled by emitting amplitude modulated wave with phase-inverted components from ultrasonic transducers on the outer circumference. Finally, we confirmed the effectiveness of the proposed method by evaluation experiments.
Keyword (in Japanese) (See Japanese page) 
(in English) Parametric array loudspeaker / Parametric effect / Phase-inversion / Reproduction area control / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 112, EA2021-5, pp. 24-29, July 2021.
Paper # EA2021-5 
Date of Issue 2021-07-08 (EA) 
ISSN 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)
Download PDF EA2021-5

Conference Information
Committee EA ASJ-H  
Conference Date 2021-07-15 - 2021-07-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Engineering/Electro Acoustics, Psychological and Physiological Acoustics, Speech, Musical Acoustics, Education in Acoustics, and Related Topics 
Paper Information
Registration To EA 
Conference Code 2021-07-EA-H 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Beam Control Based on Multi-phased Array for Parametric Array Loudspeaker 
Sub Title (in English)  
Keyword(1) Parametric array loudspeaker  
Keyword(2) Parametric effect  
Keyword(3) Phase-inversion  
Keyword(4) Reproduction area control  
Keyword(5)  
Keyword(6)  
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1st Author's Name Yuting Geng  
1st Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
2nd Author's Name Haonan Wang  
2nd Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
3rd Author's Name Masato Nakayama  
3rd Author's Affiliation Osaka Sangyo University (Osaka Sangyo Univ.)
4th Author's Name Takanobu Nishiura  
4th Author's Affiliation Ritsumeikan University (Ritsumeikan Univ.)
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Speaker Author-1 
Date Time 2021-07-15 11:20:00 
Presentation Time 25 minutes 
Registration for EA 
Paper # EA2021-5 
Volume (vol) vol.121 
Number (no) no.112 
Page pp.24-29 
#Pages 6 
Date of Issue 2021-07-08 (EA) 

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