抗MP3压缩的自适应音频盲水印算法

Adaptive blind audio watermarking algorithm capable of resisting MP3 compression

提出一种可抵抗MP3压缩的稳健的数字音频盲水印算法。该算法通过对音频小波域的近似分量进行分段以嵌入水印。水印提取时按音频特征实现自适应重分段,同时自动调整提取强度,解决了音频特征在MP3压缩前后不一致的矛盾,并实现了盲提取。实验结果显示该算法能有效抵抗MP3压缩、重采样、低通滤波和叠加白噪声等多种攻击。

A robust audio watermarking algorithm capable of resisting MP3 compression is proposed in this paper.To embeded the watermarking,the DWT approximate coefficient of original audio signal is adaptively cut into several segments.When the wa- termarking is extracted,the segments will be cut over again according to the audio character,and the extracting factor is characteristic adaptability with the audio signal.So the contradiction of the audio character in MP3 compression is solved.And the process of extracting is not prefer to the original audio.Experimental results show that the proposed scheme can resist a variety of signal manipulations and attacks,including MP3 compression,low-pass filtering,resampling,white nosie adding effectively.