同步音频水印算法的实现

目前的音频水印算法缺乏有效的同步技术，笔者应用通信网同步方法，提出了一种快速重同步音频有意义音频水印算法.该算法利用时域水印技术嵌入同步信息，从而对抗音频在时间轴上可能受到的攻击，借助变换域基于小波变换增强音频的鲁棒性，水印为一幅二值图像.仿真实验表明该算法产生的水印在对抗加性Gaussian噪声、MP3压缩和裁剪等方面具有良好的稳健性，可用于数字音频产品的版权保护.

The Implementation of a Synchronous Audio Watermarking Algorithm

The current audio watermarking algorisms lack effective techniques for synchronization.In this paper,the synchronization scheme in communication network is adopted and a fast resynchronized meaning-ful audio watermarking algorithm is proposed.These are some characteristic:with the technology of spatial watermarking,synchronization signal is embedded into the audio signal in order to resist some possible attack along the time axis;the algorithm which is based on the use of wavelet transform domain can enhance the robustness,and the watermark is a binary image here.The experiment results of the emulation show that the algorithm has good robustness in the watermark confrontation additive Gaussian noise,MP3 compression and cutting,and other aspects,and it can be used for digital audio products copyright protection.