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Paper Abstract and Keywords
Presentation 2008-01-29 09:15
Super-Directional Sound Beamforming Method
Kiyoshi Nishikawa, Genki Nishikawa (Kanazawa Univ) EA2007-101
Abstract (in Japanese) (See Japanese page) 
(in English) This paper treats a super-directional sound beamforming by utilizing a convergent beam-forming,
which can be performed by means of an array-speaker system implemented with an array of loudspeakers and two-dimensional (2-D) digital filter.
To form the convergent beam, the 2-D phase response is set for 2-D digital filter in addition to the amplitude.
It follows that, so that a focus located on the distance raises the degree of the convergence to establish a narrow beam, it is effective to expand a phase setup range
into the whole of the amplitude setup area in the low frequency band.
Lastly, an example applied to the wide-band design is also shown.
Keyword (in Japanese) (See Japanese page) 
(in English) 2-D FIR filter / directional array-speaker system / super-directional beamforming / convergent beam / / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 470, EA2007-101, pp. 1-6, Jan. 2008.
Paper # EA2007-101 
Date of Issue 2008-01-22 (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)
Download PDF EA2007-101

Conference Information
Committee EA US  
Conference Date 2008-01-28 - 2008-01-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Kansai University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) General 
Paper Information
Registration To EA 
Conference Code 2008-01-EA-US 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Super-Directional Sound Beamforming Method 
Sub Title (in English)  
Keyword(1) 2-D FIR filter  
Keyword(2) directional array-speaker system  
Keyword(3) super-directional beamforming  
Keyword(4) convergent beam  
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1st Author's Name Kiyoshi Nishikawa  
1st Author's Affiliation Kanazawa University (Kanazawa Univ)
2nd Author's Name Genki Nishikawa  
2nd Author's Affiliation Kanazawa University (Kanazawa Univ)
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Speaker Author-2 
Date Time 2008-01-29 09:15:00 
Presentation Time 30 minutes 
Registration for EA 
Paper # EA2007-101 
Volume (vol) vol.107 
Number (no) no.470 
Page pp.1-6 
#Pages 6 
Date of Issue 2008-01-22 (EA) 

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