Paper Abstract and Keywords |
Presentation |
2009-03-27 13:30
Effect of reflected wave on the accuracy of sound image localization in 3/2 loudspeaker arrangemant Kei Itou, Haruhide Hokari, Shoji Shimada (Nagaoka Univ. of Tech.) EA2008-140 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
High-quality sound services are being provided by DVD and digital terrestrial broadcasting systems.
A common sound reproduction system is the 3/2 loudspeaker arrangement, and many papers on this arrangement have been presented.
The accuracy of sound image localization has been discussed, but there are differences (10$\%$ and 90$\%$) in the correct answer rates reported in past papers.
It is thought that the reflected waves in the room might be one reason for this.
This paper describes a study on the effect of reflected waves on the accuracy of sound image localization.
In order to study the effect of the reflected waves, the impulse response is separated into four time periods: the direct wave, up to the 1st reflected wave, up to the 2nd reflected wave, up to the 3rd reflected wave.
SRTF is calculated for each period.
Listening tests to evaluate the perceived direction and sound image sharpness were carried out.
The results of perceived direction evaluation tests indicated that the averaged localization error and Front-Back confusion rate don't depend on the reflected waves in the four periods.
A test of sound image sharpness showed that the direct wave component offered the highest value all-round, its significance level was 5$\%$. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
3/2 loudspeaker arrangement / transaural method / sound image / reflected waves / averaged localization error / Front-Back confusion rate / sharpness / |
Reference Info. |
IEICE Tech. Rep., vol. 108, no. 491, EA2008-140, pp. 25-30, March 2009. |
Paper # |
EA2008-140 |
Date of Issue |
2009-03-20 (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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EA2008-140 |
Conference Information |
Committee |
EA |
Conference Date |
2009-03-27 - 2009-03-27 |
Place (in Japanese) |
(See Japanese page) |
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Paper Information |
Registration To |
EA |
Conference Code |
2009-03-EA |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Effect of reflected wave on the accuracy of sound image localization in 3/2 loudspeaker arrangemant |
Sub Title (in English) |
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Keyword(1) |
3/2 loudspeaker arrangement |
Keyword(2) |
transaural method |
Keyword(3) |
sound image |
Keyword(4) |
reflected waves |
Keyword(5) |
averaged localization error |
Keyword(6) |
Front-Back confusion rate |
Keyword(7) |
sharpness |
Keyword(8) |
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1st Author's Name |
Kei Itou |
1st Author's Affiliation |
Nagaoka University of Technology (Nagaoka Univ. of Tech.) |
2nd Author's Name |
Haruhide Hokari |
2nd Author's Affiliation |
Nagaoka University of Technology (Nagaoka Univ. of Tech.) |
3rd Author's Name |
Shoji Shimada |
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Nagaoka University of Technology (Nagaoka Univ. of Tech.) |
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Speaker |
Author-1 |
Date Time |
2009-03-27 13:30:00 |
Presentation Time |
30 minutes |
Registration for |
EA |
Paper # |
EA2008-140 |
Volume (vol) |
vol.108 |
Number (no) |
no.491 |
Page |
pp.25-30 |
#Pages |
6 |
Date of Issue |
2009-03-20 (EA) |
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