Information: Join today and make your research activities more affordable! Technical workshop participation fees and annual registration fees are available at member rates.
Notice: [Important] Announcement of Changes to Registration Fee Payment and Manuscript Upload Procedures for IEICE Technical Meetings
IEICE Technical Committee Submission System
Conference Paper's Information		 Online Proceedings
[Sign in]
Tech. Rep. Archives
 Go Top Page Go Previous   [Japanese] / [English] 

Paper Abstract and Keywords
Presentation 2015-03-03 10:45
[Poster Presentation] Directivity control of a dodecahedron loudspeaker array by using a minimum variance beamformer in a spherical harmonics domain.
Kazuna Bando, Yoichi Haneda (UEC) EA2014-112 SIP2014-153 SP2014-175
Abstract (in Japanese) (See Japanese page) 
(in English) This paper describes a directivity control method for a spherical loudspeaker array.
The beam pattern of the spherical loudspeaker array with filter coefficients designed considering a spherical harmonic expansion has a high directivity not only in the target direction but also in the opposite side. This phenomenon is attributed to the filter that, by using the spherical harmonic expansion, produces only the simple radiation pattern. On the other hand, designing the filter by using the minimum variance (MV) beamformer method in coordinates is also possible in order to avoid the unwanted high sidelobes in the opposite directions. However, if the beam pattern is rotated in an arbitrary direction, the filter needs to be redesigned for all the directions. To overcome this problem, we investigated the MV method in spherical harmonics domains. The typical filter calculated by this method can be easily transformed into a filter at other angles while avoiding the unwanted high sidelobes.
Keyword (in Japanese) (See Japanese page) 
(in English) Directivity control / Spherical harmonics / Minimum varience bearm former / Dodecahedron / Loudspeaker array / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 473, EA2014-112, pp. 219-224, March 2015.
Paper # EA2014-112 
Date of Issue 2015-02-23 (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)
Download PDF EA2014-112 SIP2014-153 SP2014-175

Conference Information
Committee SIP EA SP  
Conference Date 2015-03-02 - 2015-03-03 
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 2015-03-SIP-EA-SP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Directivity control of a dodecahedron loudspeaker array by using a minimum variance beamformer in a spherical harmonics domain. 
Sub Title (in English)  
Keyword(1) Directivity control  
Keyword(2) Spherical harmonics  
Keyword(3) Minimum varience bearm former  
Keyword(4) Dodecahedron  
Keyword(5) Loudspeaker array  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Kazuna Bando  
1st Author's Affiliation The University of Electro-Communications (UEC)
2nd Author's Name Yoichi Haneda  
2nd Author's Affiliation The University of Electro-Communications (UEC)
3rd Author's Name  
3rd Author's Affiliation ()
4th Author's Name  
4th Author's Affiliation ()
5th Author's Name  
5th Author's Affiliation ()
6th Author's Name  
6th Author's Affiliation ()
7th Author's Name  
7th Author's Affiliation ()
8th Author's Name  
8th Author's Affiliation ()
9th Author's Name  
9th Author's Affiliation ()
10th Author's Name  
10th Author's Affiliation ()
11th Author's Name  
11th Author's Affiliation ()
12th Author's Name  
12th Author's Affiliation ()
13th Author's Name  
13th Author's Affiliation ()
14th Author's Name  
14th Author's Affiliation ()
15th Author's Name  
15th Author's Affiliation ()
16th Author's Name  
16th Author's Affiliation ()
17th Author's Name  
17th Author's Affiliation ()
18th Author's Name  
18th Author's Affiliation ()
19th Author's Name  
19th Author's Affiliation ()
20th Author's Name  
20th Author's Affiliation ()
21st Author's Name  
21st Author's Affiliation ()
22nd Author's Name  
22nd Author's Affiliation ()
23rd Author's Name  
23rd Author's Affiliation ()
24th Author's Name  
24th Author's Affiliation ()
25th Author's Name  
25th Author's Affiliation ()
26th Author's Name / /
26th Author's Affiliation ()
()
27th Author's Name / /
27th Author's Affiliation ()
()
28th Author's Name / /
28th Author's Affiliation ()
()
29th Author's Name / /
29th Author's Affiliation ()
()
30th Author's Name / /
30th Author's Affiliation ()
()
31st Author's Name / /
31st Author's Affiliation ()
()
32nd Author's Name / /
32nd Author's Affiliation ()
()
33rd Author's Name / /
33rd Author's Affiliation ()
()
34th Author's Name / /
34th Author's Affiliation ()
()
35th Author's Name / /
35th Author's Affiliation ()
()
36th Author's Name / /
36th Author's Affiliation ()
()
Speaker Author-1 
Date Time 2015-03-03 10:45:00 
Presentation Time 90 minutes 
Registration for EA 
Paper # EA2014-112, SIP2014-153, SP2014-175 
Volume (vol) vol.114 
Number (no) no.473(EA), no.474(SIP), no.475(SP) 
Page pp.219-224 
#Pages 6 
Date of Issue 2015-02-23 (EA, SIP, SP) 

[Return to Top Page]

[Return to IEICE Web Page]
The Institute of Electronics, Information and Communication Engineers (IEICE), Japan