| 基于离散小波变换和复倒谱的音频水印算法 |
| |
| 引用本文： | 刘文,何迪.基于离散小波变换和复倒谱的音频水印算法[J].信息技术,2008,32(4):35-39. |
| |
| 作者姓名： | 刘文 何迪 |
| |
| 作者单位： | 上海交通大学电子工程系,上海,200240 |
| |
| 摘 要： | 提出了一种新的基于离散小波变换和复倒谱的音频水印算法.将音频信号进行3级小波分解,在第3级上对小波系数加回声,根据不同的水印值选择不同的回声延迟,然后重构音频信号.检测时采用复倒谱变换,实现了水印的盲检测.实验表明,该算法具有很好的透明性和鲁棒性,能抵抗重采样,低通滤波等常见攻击和抖动,随机剪切等同步攻击.
|
| 关 键 词： | 音频水印 离散小波变换 复倒谱 盲检测 离散 小波变换 复倒谱 音频水印算法 wavelet transform cepstrum complex based algorithm 同步攻击 剪切 随机 低通滤波 重采样 抵抗 鲁棒性 透明性 实验 盲检测 倒谱变换 |
| 文章编号： | 1009-2552(2008)04-0035-04 |
| 修稿时间： | 2007年9月17日 |
An audio watermarking algorithm based on wavelet transform and complex cepstrum transform |
| |
| LIU Wen,HE Di.An audio watermarking algorithm based on wavelet transform and complex cepstrum transform[J].Information Technology,2008,32(4):35-39. |
| |
| Authors: | LIU Wen HE Di |
| |
| Institution: | LIU Wen,HE Di(Department of Electronic Engineering,Shanghai Jiaotong University,Shanghai 200240,China) |
| |
| Abstract: | This paper proposes a new algorithm of digital audio watermarking based on wavelet transform and complex cepstrum transform.The audio signal is decomposed to 3 levels in wavelet domain,and the echo is added into the wavelet coefficients at the third level delay is dependent on the watermarking bit.The watermarked audio signal is reconstructed according to the updated wavelet coefficients.The detection of watermark is a blind detection based on complex cepstrum analysis.The results show that the algorithm is... |
| |
| Keywords: | audio watermarking DWT complex cepstrum blind detection |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
