一种改善自同步数字音频水印鲁棒性的方法

A Robust Implicit Synchronization Algorithm of Digital Audio Watermarking

同步性是数字音频水印的一个重要问题。文章在分析数字音频水印同步性的基础上提出了一种结合音频倒频谱系数和以音频能量特征决定数字水印嵌入位置的数字水印方法。为验证此方法对于鲁棒性的改善程度,在实验中采用了多种攻击法,包括MP3压缩、时间延展、音高位移、裁切取样点等。实验结果显示该方法对于同步类攻击有相当程度的改善。

Synchronization is an important problem of digital audio watermarking.This paper gives a new method for digital audio watermarking which uses audio cepstrum domain and energy features to decide the location of embed frames.The simulation results verifis that the method improved the robustness resisting the attacks such as MP3compression,time stretching,pitch shifting and cutting samples.