Paper Abstract and Keywords |
Presentation |
2010-01-25 13:00
Changes of the frequency characteristics of small loudspeakers due to the shape of back volume Takashi Miyakura, Akira Yamamoto, Satoru Fujiwara (Hosiden Corp.), Yoshinobu Kajikawa, Yasuo Nomura (Kansai Univ.) EA2009-99 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In this paper, we study changes of the frequency characteristics of small loudspeaker due to the shape of back volume by simulation and measurement. We calculate the acoustic impedances of back volumes, including 0.3mm thickness volume or 0.5mm thickness volume, by finite element method (FEM). We estimate the acoustic equivalent circuit parameters of the back volumes, and we simulate the sound pressure responses of small loudspeaker using these parameters. The simulated responses agree well with the measured responses. We show the effectiveness of the proposed method. And we study acoustic equivalent circuit of thin volume as distributed constant equivalent circuit, it seems that the parameters of distributed constant equivalent circuit affect the responses of small loudspeakers. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Small loudspeaker / Back volume / FEM / Equivalent circuit parameters / Distributed constant equivalent circuit / / / |
Reference Info. |
IEICE Tech. Rep., vol. 109, no. 389, EA2009-99, pp. 1-6, Jan. 2010. |
Paper # |
EA2009-99 |
Date of Issue |
2010-01-18 (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) |
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EA2009-99 |
Conference Information |
Committee |
EA US |
Conference Date |
2010-01-25 - 2010-01-26 |
Place (in Japanese) |
(See Japanese page) |
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Paper Information |
Registration To |
EA |
Conference Code |
2010-01-EA-US |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Changes of the frequency characteristics of small loudspeakers due to the shape of back volume |
Sub Title (in English) |
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Keyword(1) |
Small loudspeaker |
Keyword(2) |
Back volume |
Keyword(3) |
FEM |
Keyword(4) |
Equivalent circuit parameters |
Keyword(5) |
Distributed constant equivalent circuit |
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1st Author's Name |
Takashi Miyakura |
1st Author's Affiliation |
Hosiden Corporation (Hosiden Corp.) |
2nd Author's Name |
Akira Yamamoto |
2nd Author's Affiliation |
Hosiden Corporation (Hosiden Corp.) |
3rd Author's Name |
Satoru Fujiwara |
3rd Author's Affiliation |
Hosiden Corporation (Hosiden Corp.) |
4th Author's Name |
Yoshinobu Kajikawa |
4th Author's Affiliation |
Kansai University (Kansai Univ.) |
5th Author's Name |
Yasuo Nomura |
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Kansai University (Kansai Univ.) |
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Speaker |
Author-1 |
Date Time |
2010-01-25 13:00:00 |
Presentation Time |
25 minutes |
Registration for |
EA |
Paper # |
EA2009-99 |
Volume (vol) |
vol.109 |
Number (no) |
no.389 |
Page |
pp.1-6 |
#Pages |
6 |
Date of Issue |
2010-01-18 (EA) |
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