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http://dx.doi.org/10.7776/ASK.2009.28.7.653

Robust Audio Watermarking Algorithm with Less Deteriorated Sound  

Kang, Myeong-Su (울산대학교 컴퓨터정보통신공학부)
Cho, Sang-Jin (울산대학교 전기전자정보시스템공학부)
Chong, Ui-Pil (울산대학교 컴퓨터정보통신공학부)
Publication Information
The Journal of the Acoustical Society of Korea / v.28, no.7, 2009 , pp. 653-660 More about this Journal
Abstract
This paper proposes a robust audio watermarking algorithm for copyright protection and improvement of sound quality after embedding a watermark into an original sound. The proposed method computes the FFT (fast Fourier transform) of the original sound signal and divides the spectrum into a subbands. Then, it is necessary to calculate the energy of each subband and sort n subbands in descending order corresponding to its power. After calculating the energy we choose k subbands in sorted order and find p peaks in each selected subbands, and then embed a length m watermark around the p peaks. When the listeners hear the watermarked sound, they do not recognize any distortions. Furthermore, the proposed method is robust as much as Cox's method to MP3 compression, cropping, FFT echo attacks. In addition to this, the experimental results show that the proposed method is generally 10 dB higher than Cox's method in SNR (signal-to-noise ratio) aspect.
Keywords
Copyright Protection; Watermarking; Fourier Transform; Audio;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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