一种自适应复倒谱音频水印算法

倒谱域统计均值的稳定性已被一些文献用来嵌入水印,但其水印的嵌入强度等参数是根据实验获得的,这些参数需要通过反复实验来调整,因难以找到水印鲁棒性和透明性达到最佳折中的参数,故提出一种根据信噪比来调整水印鲁棒性和透明性关系的自适应复倒谱音频水印算法.该算法实现了水印盲检测,水印的提取不需原始音频和原始水印.实验结果表明,该算法在满足透明性的要求下具有较好的鲁棒性.

An Algorithm for Adaptive Complex Cesptrum Audio Watermarking

The stability of statistic average value of cepstrum domain was used to embedding watermarking,but those parameters such as embedding strength were gained from experiments in the literatures which needed to be adjusted by experiments over and over.However,it＇s still difficult to get optimal parameters for compromising robustness and transparency.So an algorithm for adaptive complex cesptrum audio watermarking was proposed by SNR to adjust the relation between watermarking robustness and transparency.The algorithm realized watermarking blind detection and its extraction did not need original audio and watermarking.Experimental results demonstrate the algorithm has good robustness when the transparency meets the requirement.