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Paper Abstract and Keywords
Presentation 2015-03-06 13:55
Digital Watermark for Audio Signals Based on Octave Similarity Considering Both the Amplitude and the Phase
Shoya Kato, Kaoru Arakawa (Meiji Univ.) SIS2014-112
Abstract (in Japanese) (See Japanese page) 
(in English) For audio digital watermarking, a method based on octave similarity in one of powerful methods. This method utilizes human auditory characteristics that we recognize two notes, which are an octave apart, as the same kinds. The artifact caused by this watermarking method is less perceivable because of this octave similarity. This method is realized by two ways, one is modulating the amplitude and the other is shifting the phase of the frequency spectrum of the audio signals. The former is more robust to attack, while the artifact is sometimes perceivable. On the other hand, the latter is less robust to attack, while the artifact is usually less perceivable. However, for some kinds of music, the artifact is more perceivable when the phase shifting is applied. In this paper, a new method of watermarking is proposed considering both of the amplitude modification and the phase shift. This method automatically classifies the audio signals into two groups; one is to be embedded into the amplitude and the other into the phase. Changing the way of embedding, the proposed method can realize less perceivable artifact while the robustness is high enough. The proposed method is verified to be effective by applying this method to various types of music.
Keyword (in Japanese) (See Japanese page) 
(in English) Digital Watermark / Octave Similarity / Auditory Characteristics / Amplitude spectrum / Phase spectrum / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 496, SIS2014-112, pp. 117-122, March 2015.
Paper # SIS2014-112 
Date of Issue 2015-02-26 (SIS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 SIS  
Conference Date 2015-03-05 - 2015-03-06 
Place (in Japanese) (See Japanese page) 
Place (in English) Meiji Univ. Nakano Campus (Tokyo) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Soft Computing, etc. 
Paper Information
Registration To SIS 
Conference Code 2015-03-SIS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Digital Watermark for Audio Signals Based on Octave Similarity Considering Both the Amplitude and the Phase 
Sub Title (in English)  
Keyword(1) Digital Watermark  
Keyword(2) Octave Similarity  
Keyword(3) Auditory Characteristics  
Keyword(4) Amplitude spectrum  
Keyword(5) Phase spectrum  
1st Author's Name Shoya Kato  
1st Author's Affiliation Meiji University (Meiji Univ.)
2nd Author's Name Kaoru Arakawa  
2nd Author's Affiliation Meiji University (Meiji Univ.)
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Date Time 2015-03-06 13:55:00 
Presentation Time 20 
Registration for SIS 
Paper # IEICE-SIS2014-112 
Volume (vol) IEICE-114 
Number (no) no.496 
Page pp.117-122 
#Pages IEICE-6 
Date of Issue IEICE-SIS-2015-02-26 

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