通信学报 ›› 2007, Vol. 28 ›› Issue (11A): 49-53.doi: 1000-436X(2007)11A-0049-05

• 学术论文 • 上一篇    下一篇

基于LSB的隐蔽通信音频水印算法

殷雄1,2,张晓明1   

  1. 1 北京石油化工学院 信息工程学院,北京 102617
    2 北京化工大学 信息科学与技术学院,北京 100029
  • 出版日期:2007-11-25 发布日期:2017-06-07

LSB-based algorithm of audio watermarking for covert communication

Xiong YIN1,2,Xiao-ming ZHANG1   

  1. 1 College of Information Engineering,Beijing Institute of Petro-chemical Technology,Beijing 102617,China
    2 College of Information Science and Technology,Beijing University of Chemical Technology,Beijing 100029,China
  • Online:2007-11-25 Published:2017-06-07

摘要:

提出了一种基于混沌映射与改进LSB嵌入方案的音频水印算法。在对秘密信息进行混沌变换的基础上,对公开音频信号进行离散小波变换,采用改进的LSB嵌入方案以不同的分辨率将秘密信息嵌入到选定的小波系数中,在嵌入水印信息的同时,嵌入一个同步信号,使水印具有同步能力,提取时不需要原始音频。实验结果表明该算法的容量较大,并且在受到重采样、裁剪攻击等时具有一定的顽健性,符合隐蔽通信的特点。

关键词: 音频水印, 隐蔽通信, LSB嵌入

Abstract:

An audio information watermarking algorithm which is based on chaotic map and modified least significant bit(LSB)embedding was presented.In the foundation of secret watermark by chaotic map,the public audio signal is trans-formed by DWT,then,the secret information was embedded by adopting the modifying the LSB values of the corre-sponding wavelet coefficients with multi-resolution.Synchronization code was embedded into audio with the watermark,and the watermark thus generated has the ability of self-synchronization.The original carrier was not required in water-mark recovery.Experimental results show that the capacity of this algorithm is high and is fit for covert communication.This algorithm is robust to many attacks,such as resample and cropping.

Key words: audio watermarking, covert communication, LSB embedding

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