基于SVD和小波变换的数字音频水印算法

An Audio Digital Watermarking Algorithm Based on the SVD and DWT

为了保障数字音乐安全性,提出了一种基于奇异值分解和离散小波变换的数字音频水印算法.首先对二值水印图像进行奇异值分解求出奇异值作为水印,并对音频信号进行离散小波变换并计算水印嵌入点,最后将水印信号嵌入.按照水印嵌入的反操作进行水印提取,采用叠加噪声、去除噪声等进行攻击.实验表明,该算法具有较强的鲁棒性和不可感知性,能有效抵御各种常见攻击.

In order to protect the security of digital music, an audio digital watermarking algorithm based on SVD and DWT is presented. First, the singular value decomposition of the binary watermark image is carried out to obtain the singular valves for being used as watermark. Second, the DWT of the audio signal is made and the embedded points of the Watermark are computed. Third, the watermark signal is embedded. The watermark can be picked up according to the operation opposite to the watermark embedding. The experiment demonstrates that the algorithm is robust and imperceptible and can resist all kinds of common attacks.