[1]郭舒婷,田晖.一种基于G.729a语音的信息隐藏方法[J].华侨大学学报(自然科学版),2014,35(3):277-282.[doi:10.11830/ISSN.1000-5013.2014.03.0277]
　GUO Shu-ting,TIAN Hui.An Information Hiding Method Based on G.729a Speech[J].Journal of Huaqiao University(Natural Science),2014,35(3):277-282.[doi:10.11830/ISSN.1000-5013.2014.03.0277]
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一种基于G.729a语音的信息隐藏方法()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第35卷
期数:
2014年第3期
页码:
277-282
栏目:
出版日期:
2014-05-16

文章信息/Info

Title:
An Information Hiding Method Based on G.729a Speech
文章编号:
1000-5013(2014)03-0277-06
作者:
郭舒婷;  田晖
华侨大学 计算机科学与技术学院, 福建 厦门 361021
Author(s):
GUO Shu-ting;  TIAN Hui
College of Computer Science and Technology, Huaqiao University, Xiamen 361021, China
关键词:
信息隐藏;  隐写;  IP语音;  G.729a;  矩阵编码
Keywords:
information hiding;  steganography;  voice over internet protocol;  G.729a;  matrix encoding
分类号:
TP309.2;TP309.7
DOI:
10.11830/ISSN.1000-5013.2014.03.0277
文献标志码:
A
摘要:
针对VoIP系统普遍使用G.729a语音编码,采用逐帧按位取反的方式对G.729a语音进行全面测试,以客观的语音质量感知评价(PESQ)标准为依据,总结G.729a语音帧中可隐藏位(最低有效位).结合矩阵编码算法,提出一种基于G.729a语音的信息隐藏方法,以大量的语音样本为载体,对该方法进行测试分析.实验结果表明:该方法能提供可观的隐藏容量(8 bit·帧-1),较高的嵌入效率(2.678),很好的不可感知性(平均PESQ值为3.593),且很好地符合了VoIP通信的实时性要求.
Abstract:
For G.729a speech codec widely used in VoIP systems, a one-by-one bit flipping test for G.729a speech is carried out, and the available bits for steganography(least significant bits)are correspondingly obtained based on perceptual evaluation of speech quality. To combine with matrix encoding, an information hiding approach based on G.729a speech is proposed. The approach is tested and evaluated with a large number of speech samples as the carriers. Experimental results demonstrate that the proposed approach can provide a relatively high hiding capacity(8 bits/frame), higher embedding efficiency(2.678), good imperceptibility(the average PESQ score is 3.593)and nice real-time performance that meets the requirement of VoIP systems well.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2013-07-17
通信作者: 田晖(1982-),男,副教授,主要从事网络与多媒体信息安全、信息隐藏理论与技术的研究.E-mail:htian@hqu.edu.cn.
基金项目: 国家自然科学基金资助项目(61302094, 61370007, 61202468); 福建省科技创新平台建设基金资助项目(2012H2002); 福建省自然科学基金资助项目(2011J05151, 2013J01241); 福建省中青年教师教育科研资助项
更新日期/Last Update: 2014-05-20