基于卷积码的DCT域音频扩谱水印算法
Spread-spectrum Audio Watermarking Algorithm in DCT Domain Based on Convolutional Codes
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摘要: 为了提高算法的鲁棒性，借助卷积码的编解码思想，在DCT域研究了自适应于音频的扩谱水印算法提出了采用Viterbi软判决的盲检水印提取改进算法，水印检测不需要原始音频．实验结果表明，本文的方法具有很高的鲁棒性，能完全抵制MP3压缩等信号处理型攻击．Abstract: In order to enhance robustness,with the help of convolutional idea,the adaptive audio watermarking algorithm is investigated in DCT domain in this paper.The improved detecting algorithm which uses Viterbi soft-decision is presented,and the watermark detecting does not need the original audio.Experimental results show that the proposed algorithm is provided with h igh robustness,and can resist signal processing manipulation attacks such as MP3 compression algorithm.
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