基于分形维数的语音信息隐藏方法  

Methods of Speech Information Hiding Based on Fractal Dimension

作　　者：闫佩君[1] 钱聪[1] 

机构地区：[1]西安通信学院,陕西西安710106

出　　处：《现代电子技术》2006年第23期48-50,共3页Modern Electronics Technique

摘　　要：通过研究语音信号分形维数的特点,提出一种在语音信号小波变换低频系数的DCT域实现信息隐藏的方法,该方法首先对原始语音进行一级小波分解,计算高频系数的分形维数,在对应帧的低频系数中嵌入秘密信息。秘密信息的嵌入位置和个数利用小波变换高频系数的分形维数决定,嵌入和提取采用查量化表的方法。仿真结果表明,该算法具有较好的鲁棒性和嵌入效率。In this paper,the features of fractal dimension of digital voice signal waveforms are analyzed and a method of speech information hiding in the DCT domain of wavelet is proposed. The position and number of information to be embedded are decided based on the fractal dimension of high frequency coefficients. Embedding and extracting process are accomplished by checking quantitative table. The simulation results show that the methods of this article can achieve satisfactory performances.

关 键 词：分形维数 小波 DCT 信息隐藏 

分 类 号：TN912.3[电子电信—通信与信息系统]