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 .
In order to enhance robustness, with the help of co nvolutional idea, the adaptive audio watermarking algorithm is investigated in D CT domain in this paper. The improved detecting algorithm which uses Viterbi sof t-decision is presented, and the watermark detecting doesnt 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 MP 3 compression algorithm.
出处
《信息与控制》
CSCD
北大核心
2004年第6期651-655,共5页
Information and Control
基金
国家教育部科学技术研究重点资助项目 (2 0 40 61)
关键词
音频水印
卷积码
软判决
盲检
鲁棒性
audio watermarking
convolution code
soft-decision
blind detecting
robustness
