基于小波变换的音频水印算法  

Audio Watermark Algorithm Based on Wavelet Transform

作　　者：张永平[1] 苏广川[1] 

机构地区：[1]北京理工大学电子工程系

出　　处：《计算机工程与应用》2006年第35期24-26,共3页Computer Engineering and Applications

基　　金：国家自然科学基金资助项目(60472021)。

摘　　要：提出一种将水印同步与水印嵌入分开处理的新型数字音频水印算法。利用DWT低频分量能量集中、抗干扰能力强的特点,通过对其进行滤波来提取特征点,在特征点指定位置的中频分量进行多次的水印嵌入。由于使用多重密钥控制且同步准确,因而算法具有很强的鲁棒性和安全性。A novel audio watermark algorithm is proposed by which synchronization and embedding are processed separately.The low frequency component after DWT has the property of energy concentration and robust to interference, Features are extracted by filtering the low frequency component.Watermarks are embedded repeatedly at the positions of middle frequency component appointed by these features.The algorithm has perfect robustness and security by using multiple secret controlling and accurate synchronization.

关 键 词：小波变换 数字水印 同步 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]