一种抗DA/AD转换攻击的音频信息隐藏算法

An Audio Information Hiding Algorithm Against Attacks from D/A and A/D Conversions

在经历播放和转录的音频信息隐藏应用系统中,DA/AD变换引起的攻击是限制其性能的主要因素之一。通过分析DA/AD转换过程中音频信号线性伸缩、文件大小变化引起的失同步,提出了一种基于DCT域逐项定位的音频信息隐藏算法,实验结果表明,该算法能够有效抵抗DA/AD转换过程中的攻击,具有良好的鲁棒性。

A DA/AD transform attack resistance of audio information hiding is to pick a transcribed to the digital audiobroadcast after complex DA/AD conversion process, general audio information hiding algorithm is difficult to resist the processof attack, and poor practicability. Paper analyzed before and after the audio DA/AD conversion impact and put forward relevantsolutions, is presented based on the positioning of the audio frequency DCT domain audio information hiding algorithm wasproposed. The experimental results show that the algorithm can effectively resist attacks from DA/AD conversion, with strongrobustness.