摘要
利用混沌动力学系统中logistic映射先对水印图像进行置乱预处理以增强其鲁棒性,在小波域中将原始音频信号按比例分段,此比例为原始音频信号低频部分与水印信号个数之比,然后将水印信号加入到音频信号的低频部分。用StirMark攻击后的实验结果表明,该算法对StirMark的部分攻击具有一定的鲁棒性。
The logistic-map sequences to encrypt the watermark are used. （Discrete Wavelet Transform） domain is seperated into some pieces determined the low frequency parts and the length of the encrypted relevant pieces of the low frequency parts in the DWT The original audio signal in DWT by the ratio between the length of watermark. Every bit of the watermark is added into the domain. Experimental results show that the algorithm is robust against some StirMark attacks.
出处
《电声技术》
2006年第7期35-38,共4页
Audio Engineering
基金
山东省中青年科学家科研奖励基金(2004BS01005)
