Patchwork-based stereo audio watermarking against de-synchronization attack

Natgunanathan, Iynkaran, Xiang, Yong and Zong, Tianrui 2012, Patchwork-based stereo audio watermarking against de-synchronization attack, in CISP 2012 : Proceedings of the 5th International Congress on Image and Signal Processing, IEEE, Piscataway, N.J., pp. 1601-1605, doi: 10.1109/CISP.2012.6469691.

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Title Patchwork-based stereo audio watermarking against de-synchronization attack
Author(s) Natgunanathan, IynkaranORCID iD for Natgunanathan, Iynkaran
Xiang, YongORCID iD for Xiang, Yong
Zong, Tianrui
Conference name Image and Signal Processing. Congress (5th : 2012: Chongqing, China)
Conference location Chongqing, China
Conference dates 16-18 Oct. 2012
Title of proceedings CISP 2012 : Proceedings of the 5th International Congress on Image and Signal Processing
Editor(s) [Unknown]
Publication date 2012
Conference series Image and Signal Processing Congress
Start page 1601
End page 1605
Total pages 5
Publisher IEEE
Place of publication Piscataway, N.J.
Keyword(s) patchwork
audio watermarking
stereo audio signal
discrete cosine transform (DCT)
de-synchronization attack
Summary Audio watermarking schemes using patchworkbased algorithm have good robustness against majority of the watermarking attacks. However, these watermarking schemes are vulnerable to de-synchronization attack. This paper proposes a patchwork-based watermarking scheme for stereo audio signals to address this problem. To improve the robustness, the proposed method exploits the similarities of both channels in the stereo audio signals. Given a stereo audio signal, we first compute the discrete cosine transform (DCT) of both channels, which gives two sets of DCT coefficients. Then DCT segments are formed form DCT coefficients belong to a certain frequency range. The DCT segment formation is determined by a pseudonoise (PN) sequence which acts as a secret key. Then watermark bits are embedded into DCT segments by modifying the DCT coefficients. In the decoding process the secret key is used to extract the watermark bits embedded in the DCT segments. Simulation results illustrate the effectiveness of the proposed method against de-synchronization attack, compared to latest patchwork-based audio watermarking scheme. Besides, the proposed algorithm also gives better robustness against other conventional attacks.
ISBN 9781467309639
Language eng
DOI 10.1109/CISP.2012.6469691
Field of Research 090609 Signal Processing
Socio Economic Objective 890404 Publishing and Print Services (incl. Internet Publishing)
HERDC Research category E1 Full written paper - refereed
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