【摘要】 论文针对低速率语音编码过程的特点,提出了一种基于动态码本生成的信息隐藏方法,设计了相应的嵌入和提取算法.该方法解决了现有的基于静态码本分区的信息隐藏方法无法对抗码字统计分析检测的问题.实验表明该隐藏算法在13.3Kbps的载体速率下能获得450bps隐藏容量,而且载密信息的语音质量PESQ值下降不到6%.更多还原

【Abstract】 This paper proposes a kind of information hiding method which is based on dynamic codebook generating technique,together with the corresponding inserting method and extracting algorithm. This method greatly solves the problem of deficiency in anti-testing of code analysis,which is faced by the information hiding that is based on static codebook partition techniques. The experimental result shows that the proposed algorithm can get 450 bps steganographic capacities within13. 3 Kbps carrier rate,while the loss of PESQ value of speech with steganographic information is less than 6%.更多还原