现代电子技术Issue(11)：103-106,111,5.
高质量信道上回声隐藏法秘密信息提取出错原因分析
Analysis on error reasons of secret information extraction in high quality channel by echo hiding method
原晨 1高勇1
作者信息
- 1. 四川大学 电子信息学院，四川 成都 610065
- 折叠
摘要
Abstract
Echo information hiding is a technique to realize information hiding by embedding different delay echoes in carrier voice. The basic principle of echo hiding algorithm is introduced. The key steps of secret information extraction with echo hiding method is analyzed,that is the voice cepstrum after calculating the hiding secret information. According to the relation of linear convolution and cycle convolution,the error reasons of secret information extraction when the hiding communication is imple⁃mented with echo hiding method in high quality channel are deduced and summarized. The accuracy of secret information recovery with echo hiding method is improved by regulating the size of echo decay factor adaptively according to the cepstrum value in delay areas of the voice.关键词
回声隐藏/倒谱/线性卷积/循环卷积/高质量信道Key words
echo hiding/cepstrum/linear convolution/cycle convolution/high quality channel分类
信息技术与安全科学引用本文复制引用
原晨,高勇..高质量信道上回声隐藏法秘密信息提取出错原因分析[J].现代电子技术,2015,(11):103-106,111,5.
