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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
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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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Conference Information
Committee EMM  
Conference Date 2012-03-16 - 2012-03-16 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
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  
Keyword(2) copy protect  
Keyword(3) audio signal hiding  
Keyword(4) re-sampling  
Keyword(5) aliasing  
Keyword(6) low-pass filter  
Keyword(7) G-encoder mark  
Keyword(8)  
1st Author's Name Toshio Modegi  
1st Author's Affiliation 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
Date of Issue 2012-03-09 (EMM) 


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