摘要
该文提出了一种基于离散小波变换的数字音频水印盲检算法。将视觉有意义的二值水印图像经过一定的预处理及SS技术调制后,嵌入小波域的中低频系数中。水印提取时,利用LPC原理,不需要原始音频信号。该文算法与文10的算法相比,BER性能提高了约10%～15%。实验结果表明所嵌入的水印是不可感知的,算法对大多数音频信号处理具有很强的鲁棒性,如低通滤波、重采样、mp3压缩等操作。
A digital audio watermarking algorithm based on discrete wavelet transform is presented in this paper.A visually significant binary image via some pre-processing and SS modulating is embedded in audio low-middle frequency coefficients in wavelet domain.A scheme of watermark detecting is presented with linear predictive coding,and it does not use the original signal during extracting watermark.The BER is improved by 10%～15% in this algorithm compared with the algorithm in.Experimental results show that the watermark is imperceptible and the algorithm is robust to many attacks,such as low pass filter,resample,mp3 compression and so on.
出处
《计算机工程与应用》
CSCD
北大核心
2004年第34期78-80,91,共4页
Computer Engineering and Applications
基金
宁波市信息技术创新基金项目(编号:2002660
2002661)
关键词
数字音频水印
离散小波变换
线性预测编码
digital audio watermarking,Discrete Wavelet Transform(DWT),Linear Predictive Coding(LPC)
