CAJ | 학술논문

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％．
논문침대저속솔어음편마과정적특점，제출료일충기우동태마본생성적신식은장방법，설계료상응적감입화제취산법．해방법해결료현유적기우정태마본분구적신식은장방법무법대항마자통계분석검측적문제．실험표명해은장산법재13．3Kbps 적재체속솔하능획득450bps 은장용량，이차재밀신식적어음질량 PESQ 치하강불도6％．
This paper proposes a kind of information hiding method which is based on dynamic codebook generating tech -nique ,together with the corresponding inserting method and extracting algorithm .This method greatly solves the problem of deficien-cy 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 within 13 .3 Kbps carrier rate ,while the loss of PESQ value of speech with steganographic information is less than 6% .