一种DCT域自适应鲁棒音频盲水印算法

水印强度是数字水印技术中水印鲁棒性重要的参数,目前大多数的水印算法均利用实验来确定嵌入的水印强度.文中提出的一种在离散余弦变换域根据信噪比来自适应计算音频水印强度的算法,实现了水印的盲提取.为了保证水印的安全性,算法对水印采取了伪随机数加密和混沌加密.实验的结果表明水印算法对常见的音频信号处理操作/攻击具有较好的鲁棒性.

Adaptive Robust Audio Blind Watermarking Algorithm in DCT Domain

Watermarking strength is an important parameter to watermarking robustness in digital watermarking technology.Many watermark algorithms today make sure watermarking strength by experiences.An adaptive method to calculate audio watermarking strength according to SNR in DCT is proposed in this paper.Watermark's extracting is blind in the algorithm.For security,the algorithm adopts pseudo rand number and chaos to encrypt.Experiment results show that the proposed algorithm is robust to common audio processing o...