面向立体声的多源音频信息隐写  

A Multi-Source Steganography for Stereo Audio

作　　者：常迪[1,2] 张霞[3] 吴越[1,2] 

机构地区：[1]武汉大学国家多媒体软件工程技术研究中心,湖北武汉430072 [2]武汉大学计算机学院,湖北武汉430072 [3]江汉大学物理与信息工程学院,湖北武汉430056

出　　处：《武汉大学学报（理学版）》2013年第3期277-284,共8页Journal of Wuhan University:Natural Science Edition

基　　金：国家大学生创新创业训练项目(111048652;1210486060);湖北省教育厅科学技术研究重点项目(D20123405);湖北省建设科技研究项目(鄂建文2012-78);武汉市教育局教研项目(2011055)

摘　　要：针对多音源的音频信号,提出面向立体声的多源音频信息隐写算法.该算法将音源分离技术中的二进制时频掩码技术引入到信息隐写算法中,以各分离音源为载体,采用立体声混合嵌入的方式,通过修改时频域中奇数窗的部分系数,实现隐写信息的嵌入,该算法代替了传统信息隐写算法的单源嵌入方式.实验结果显示,该算法嵌入容量较大,并能有效抵抗常见信号处理攻击、StriMark Benchmark for Audio等攻击,平均误码率小于2.80%,算法具有很好的鲁棒性.We proposed a steganography algorithm for stereo multi-source audio by studying sound source separa- tion technique based on spatial clues and using it in information steganography technology. In this algorithm, the bina- ry spectrum mask technology which is used in sound source separation technology is introduced in steganography algo- rithm. Regard the separated sound sources as carriers, and embed the stereo sound, by modifying part of the coeffi- cients in odd windows in time-frequency domain, to achieve steganography information embedding, which replaces the traditional single source embedding steganography algorithms. Experimental results show that this algorithm has large embedding capacity, and it is able to resist the attacks of StriMark Benchmark for Audio and other common attacks ef- fectively. The average bit error rate is smaller than 2.80 %, which provides good robustness.

关 键 词：立体声音频 信息隐写 时频域 多音源 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]