Paper Abstract and Keywords |
Presentation |
2008-08-05 10:45
Audio watermarking method based on the cochlear delay characteristics Daiki Hamada, Masashi Unoki (JAIST) EA2008-58 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper proposes a state-of-the-art audio watermarking method, based on the properties of the human cochlear. The method is based on the concept of embedding inaudible watermarks into an original sound by controlling the phase characteristics of the sound in relation to the characteristics of cochlear delay. The method consists of two processes: data embedding and data detection. The data embedding process was carried out by applying two types of all-pass filters with the cochlear delays, and then selecting the filtered signal from them according to the watermarks. The data detection process involved by estimating the group delay of the filter from the phase difference between the original and watermarked sounds to detect the embedded data. We designed optimal group delays for the filters. We experimentally evaluated the proposed method by carrying out subjective detection tests and three objective tests of robustness (against down sampling, amplitude compression, and mp3-compression). Results showed that subjects could not detect the embedded data in any of the watermarked sounds we used, and that the proposed method precisely and robustly detected the embedded data from the watermarked sounds. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
audio watermarking / copyright protection / cochlear delay / IIR all-pass filter / group delay / / / |
Reference Info. |
IEICE Tech. Rep., vol. 108, no. 179, EA2008-58, pp. 77-82, Aug. 2008. |
Paper # |
EA2008-58 |
Date of Issue |
2008-07-28 (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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EA2008-58 |
Conference Information |
Committee |
EA |
Conference Date |
2008-08-04 - 2008-08-05 |
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(See Japanese page) |
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Registration To |
EA |
Conference Code |
2008-08-EA |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Audio watermarking method based on the cochlear delay characteristics |
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audio watermarking |
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copyright protection |
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cochlear delay |
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IIR all-pass filter |
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group delay |
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1st Author's Name |
Daiki Hamada |
1st Author's Affiliation |
Japan Advanced Institute of Science and Technology (JAIST) |
2nd Author's Name |
Masashi Unoki |
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Japan Advanced Institute of Science and Technology (JAIST) |
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Speaker |
Author-2 |
Date Time |
2008-08-05 10:45:00 |
Presentation Time |
30 minutes |
Registration for |
EA |
Paper # |
EA2008-58 |
Volume (vol) |
vol.108 |
Number (no) |
no.179 |
Page |
pp.77-82 |
#Pages |
6 |
Date of Issue |
2008-07-28 (EA) |
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