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Received: 2004-11-12

Revision Accepted: 2005-01-12

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Journal of Zhejiang University SCIENCE A 2005 Vol.6 No.100 P.53~57


Adaptive audio watermarking based on SNR in localized regions

Author(s):  WU Guo-min, ZHUANG Yue-ting, WU Fei, PAN Yun-he

Affiliation(s):  School of Computer Science, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   wuguomin@263.net, yzhuang@cs.zju.edu.cn, wufei@cs.zju.edu.cn

Key Words:  Copyright protection, Audio watermarking, Time scale modification, MDCT

WU Guo-min, ZHUANG Yue-ting, WU Fei, PAN Yun-he. Adaptive audio watermarking based on SNR in localized regions[J]. Journal of Zhejiang University Science A, 2005, 6(100): 53~57.

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author="WU Guo-min, ZHUANG Yue-ting, WU Fei, PAN Yun-he",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

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%T Adaptive audio watermarking based on SNR in localized regions
%A WU Guo-min
%A ZHUANG Yue-ting
%A WU Fei
%A PAN Yun-he
%J Journal of Zhejiang University SCIENCE A
%V 6
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%@ 1673-565X
%D 2005
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2005.AS0053

T1 - Adaptive audio watermarking based on SNR in localized regions
A1 - WU Guo-min
A1 - ZHUANG Yue-ting
A1 - WU Fei
A1 - PAN Yun-he
J0 - Journal of Zhejiang University Science A
VL - 6
IS - 100
SP - 53
EP - 57
%@ 1673-565X
Y1 - 2005
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2005.AS0053

In this paper, a novel localized audio watermarking scheme based on signal to noise ratio (SNR) to determine a scaling parameter a is proposed. The basic idea is to embed watermark in selected high inflexion regions, and the intensity of embedded watermarks are modified by adaptively adjusting a. As these high inflexion local regions usually correspond to music edges like sound of percussion instruments, explosion or transition of mixed music, which represent the music rhythm or tempo and are very important to human auditory perception, the embedded watermark is especially expected to escape the distortions caused by time domain synchronization attacks. Taking advantage of localization and SNR, the method shows strong robustness against common problems in audio signal processing, random cropping, time scale modification, etc.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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[6] Tachibana, R., Shimizu, S., Nakamura, T., Kobayashi, S., 2001. An Audio Watermarking Method Robust against Time and Frequency Fluctuation. SPIE Conference on Security and Watermarking of Multimedia Contents 3, 4314: 104-115.

[7] Tzanetakis, G., Cook, P., 2000. Sound Analysis Using MPEG Compressed Audio. Icassp, Istanbul, p.2-761.

[8] Wang C.T., Chen, T.S., Chao, W.H., 2004. A New Audio Watermarking Based on Modified Discrete Cosine Transform of MPEG/Audio Layer 3. IEEE International Conference on Networking Sensing & Control, Taiwan, China, p.21-23.

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