计算机应用 ›› 2009, Vol. 29 ›› Issue (09): 2323-2326.

• 信息安全 • 上一篇    下一篇

面向公共信息传播的音频水印算法

张晓明1,禹召阳2,李文治2   

  1. 1. 北京石油化工学院
    2.
  • 收稿日期:2009-02-16 修回日期:2009-03-28 发布日期:2009-11-10 出版日期:2009-09-01
  • 通讯作者: 张晓明
  • 基金资助:
    市级基金

Audio watermarking algorithm for public information transmission

  • Received:2009-02-16 Revised:2009-03-28 Online:2009-11-10 Published:2009-09-01

摘要: 提出了一种基于小波分解和倒谱技术的音频数字水印算法,该算法通过对原始音频进行小波多级分解,从中选取低频系数进行倒谱变换。通过统计均值的计算和调整方法设计,完成了水印的嵌入。实验结果表明该算法能够有效地抵抗A/D和D/A攻击,误码率为0,隐藏容量较大。同时,本算法还能够抵抗一定的AMR攻击,为手机音频的安全传播和管理提供了新的前景。

关键词: 音频水印, 小波变换, 倒谱, 模/数转换, AMR格式

Abstract: Based on wavelet decomposition and cepstrum technology, an audio watermarking algorithm was proposed in which the low-frequency wavelet coefficients were chosen for cepstrum transforming. The watermark was embedded into the audio carrier through the method of statistical mean calculation and modification. Experimental results show that the proposed algorithm can resist the attacks of A/D and D/A successfully with large capacity and zero bit error. Meanwhile, the approach can prevent against the AMR attack and it provides promising prospect for the secure broadcast and management of mobile audio.

Key words: audio watermarking, wavelet transform, cepstrum, A/D transform, AMR format