一种数字音频多水印算法

A Digital Audio Multi-Watermarking Algorithm

本文提出了一种用两种不同方式在变换域嵌入多水印的方法。该算法实现在稳健水印的基础上加入了易损水印。通过实验,证明在同一音频作品里面以这样的方式加入两种水印,通过一定的控制,它们可以分别起作用,通过计算提取的易损水印,可以很容易对音频信号的原始性作出结论,而提取出的稳健水印则对诸如滤波、重采样、加噪等攻击表现出很好的稳健性。

this paper presents a kind of algorithm of multi-watermarking. In this scheme, we have embedded both robust watermarking and fragile watermarking. Experiments'results show that the two kind of watermarking can respectively do their work well by proper control. By the extraction, we can get the two kind of watermarkings, the one of them can be used to estimate the watermarked signal's origination, and the other one is robust to many operations to digital signal, such as filter, resample and so on.