Donghwan Shin
ABSTRACT
In this paper, we propose a replica based audio blind watermarking algorithm which is robust against High Efficiency Advanced Audio Coding (HE-AAC). The algorithm embeds watermarks by modulating normalized correlation of original signal and its delayed version. The modulation can be done by adding modulated replica signal at a specified delay to the host signal. The watermark embedding strength is determined by signal-to-noise ratio (SNR) before and after HE-AAC compression. And a feedback process is implemented to ensure the watermark embedding strength has achieved. Experimental results show the proposed watermarking algorithm highly robust to HE-AAC compression while maintaining good imperceptibility.
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Cross Ref
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