一种小波域新颖鲁棒语音扩谱水印  

A Novel Robust Spread-Spectrum Audio Watermarking Scheme in Wavelet Domain

作　　者：王潇[1] 柏森[1,2] 袁晓芳[1] 

机构地区：[1]重庆通信学院 [2]重庆大学计算机学院,重庆400044

出　　处：《微电子学与计算机》2006年第4期130-132,136,共4页Microelectronics & Computer

基　　金：重庆通信学院科技创新基金资助项目;重庆市应用基础研究资助项目(8028)

摘　　要：文章提出一种基于小波变换的新颖的鲁棒语音扩谱水印算法。算法对原始语音进行离散小波变换,利用扩谱水印技术将水印隐藏到小波域。根据检测与估计理论,运用新的检测统计量进行相关检测。同时,通过引入抗异步攻击的机制和倒谱滤波,增强了算法的鲁棒性。实验结果表明,该算法对噪声、中值滤波、低通滤波、异步攻击等有较强的鲁棒性。This paper proposes a novel robust spread-spectrum（ss） audio watermarking scheme based on DWT, in which a watermark is embedded into wavelet domain which original audio signal is transformed to. According to detection and estimation theory, a new statistical function is used when having correlation test. In the meantime, mechanisms against desynchronization attacks and cepstrum filtering are introduced to enhance robustness. Experimental results show that this scheme is robust to noise, median filtering, low-pass filtering, desynchronization attacks and so on.

关 键 词：语音水印 扩谱 小波变换 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]