Paper Abstract and Keywords |
Presentation |
2012-03-16 09:30
Providing Hiding Functions of Sub-track Acoustic Signals for Audio Watermark Technique
-- G-encoder Mark for COPY PROTECT -- Toshio Modegi (DNP) EMM2011-65 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
We propose hiding another acoustic signal such as vocal sounds of warning messages or copy disturbance noises within an acoustic signal of protecting target. If we embed lower frequency components of another acoustic signal with its spectrum reversed into higher frequency ranges of a source acoustic signal, we can make the hided acoustic signal components audible just by re-sampling the embedded signal. This re-sampling operation will provoke shifting higher frequency components to lower frequency ranges by aliasing phenomenon. However, a generally used recorder or sampler has a low-pass filter, which can suppress this aliasing phenomenon. Therefore, before re-sampling we propose adding slightly aliased components to the embedded signal under auditory masking level, and we make aliasing process simultaneously decrease the source masker components in order to make the suppressed another acoustic signal components audible. In this paper, we propose giving robustness against this signal processing of a recorder device to the embedded signal. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
audio watermark / copy protect / audio signal hiding / re-sampling / aliasing / low-pass filter / G-encoder mark / |
Reference Info. |
IEICE Tech. Rep., vol. 111, no. 496, EMM2011-65, pp. 7-12, March 2012. |
Paper # |
EMM2011-65 |
Date of Issue |
2012-03-09 (EMM) |
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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EMM2011-65 |
Conference Information |
Committee |
EMM |
Conference Date |
2012-03-16 - 2012-03-16 |
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(See Japanese page) |
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Registration To |
EMM |
Conference Code |
2012-03-EMM |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Providing Hiding Functions of Sub-track Acoustic Signals for Audio Watermark Technique |
Sub Title (in English) |
G-encoder Mark for COPY PROTECT |
Keyword(1) |
audio watermark |
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copy protect |
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audio signal hiding |
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re-sampling |
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aliasing |
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low-pass filter |
Keyword(7) |
G-encoder mark |
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1st Author's Name |
Toshio Modegi |
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Dai Nippon Printing Co., Ltd. (DNP) |
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Speaker |
Author-1 |
Date Time |
2012-03-16 09:30:00 |
Presentation Time |
30 minutes |
Registration for |
EMM |
Paper # |
EMM2011-65 |
Volume (vol) |
vol.111 |
Number (no) |
no.496 |
Page |
pp.7-12 |
#Pages |
6 |
Date of Issue |
2012-03-09 (EMM) |
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