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http://dx.doi.org/10.9708/jksci.2010.15.2.109

Robust Audio Watermarking in Frequency Domain for Copyright Protection  

Dhar, Pranab Kumar (울산대학교 컴퓨터정보통신공학부)
Kim, Jong-Myon (울산대학교 컴퓨터정보통신공학부)
Publication Information
Journal of the Korea Society of Computer and Information / v.15, no.2, 2010 , pp. 109-117 More about this Journal
Abstract
Digital watermarking has drawn extensive attention for protecting digital contents from unauthorized copying. This paper proposes a new watermarking scheme in frequency domain for copyright protection of digital audio. In our proposed watermarking system, the original audio is segmented into non-overlapping frames. Watermarks are then embedded into the selected prominent peaks in the magnitude spectrum of each frame. Watermarks are extracted by performing the inverse operation of watermark embedding process. Simulation results indicate that the proposed scheme is robust against various kinds of attacks such as noise addition, cropping, resampling, re-quantization, MP3 compression, and low pass filtering. Our proposed watermarking system outperforms Cox's method in terms of imperceptibility, while keeping comparable robustness with the Cox's method. Our proposed system achieves SNR (signal-to-noise ratio) values ranging from 20 dB to 28 dB. This is in contrast to Cox's method which achieves SNR values ranging from only 14 dB to 23 dB.
Keywords
Copyright Protection; Digital Watermarking; Sound Content;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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