Paper Abstract and Keywords |
Presentation |
2013-05-17 10:35
Distortion Reduction Using Volterra Filter for Ultrasonic Parametric Loudspeaker in Nearfield Usage Osamu Hoshuyama (NEC), Kazuma Yoshino (Univ. of Tokyo), Seiya Tateoka (Kyushu Univ.), Katsuhiro Hirose (Univ. of Electro-Comm.), Akira Oyamada (Univ. of Tsukuba) EA2013-17 SIP2013-17 SP2013-17 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper proposes a distortion reduction method based on Volterra filter for nearfield ultrasonic parametric loudspeakers. In the proposed method, the system from the ultrasonic parametric loudspeaker including modulator to the measurement microphone is treated as a black box, which is identified with a 2nd order Volterra filter. A distortion compensation filter based on the identified filter cancels the distortion caused by the loudspeaker and nearfield air propagation. The proposed method can reduce any type of ultrasonic loudspeaker, as far as the Volterra filter can model unknown parts of the loudspeaker system, such as nearfield nonlinear propagation and ultrasonic emitters. Experimental evaluations of an ultrasonic loudspeaker with SSB-AM (Single Side Band Amplitude Modulation) show that the proposed method reduces the distortion from 15% to 2% in total harmonics distortion. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Ultrasonic Parametric Loudspeaker / Volterra Filter / Distortion / Near Field / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 113, no. 28, SIP2013-17, pp. 97-102, May 2013. |
Paper # |
SIP2013-17 |
Date of Issue |
2013-05-09 (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) |
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EA2013-17 SIP2013-17 SP2013-17 |
Conference Information |
Committee |
SP EA SIP |
Conference Date |
2013-05-16 - 2013-05-17 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
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Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Speech and Acoustic Signal Processing, Speech, and Related Topics |
Paper Information |
Registration To |
SIP |
Conference Code |
2013-05-SP-EA-SIP |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Distortion Reduction Using Volterra Filter for Ultrasonic Parametric Loudspeaker in Nearfield Usage |
Sub Title (in English) |
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Keyword(1) |
Ultrasonic Parametric Loudspeaker |
Keyword(2) |
Volterra Filter |
Keyword(3) |
Distortion |
Keyword(4) |
Near Field |
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1st Author's Name |
Osamu Hoshuyama |
1st Author's Affiliation |
NEC (NEC) |
2nd Author's Name |
Kazuma Yoshino |
2nd Author's Affiliation |
The University of Tokyo (Univ. of Tokyo) |
3rd Author's Name |
Seiya Tateoka |
3rd Author's Affiliation |
Kyushu University (Kyushu Univ.) |
4th Author's Name |
Katsuhiro Hirose |
4th Author's Affiliation |
University of Electrocommunications (Univ. of Electro-Comm.) |
5th Author's Name |
Akira Oyamada |
5th Author's Affiliation |
University of Tsukuba (Univ. of Tsukuba) |
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Speaker |
Author-1 |
Date Time |
2013-05-17 10:35:00 |
Presentation Time |
25 minutes |
Registration for |
SIP |
Paper # |
EA2013-17, SIP2013-17, SP2013-17 |
Volume (vol) |
vol.113 |
Number (no) |
no.27(EA), no.28(SIP), no.29(SP) |
Page |
pp.97-102 |
#Pages |
6 |
Date of Issue |
2013-05-09 (EA, SIP, SP) |
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