摘要
数字音频水印是水印技术中重要的组成部分。而近年来对音频水印的研究远远少于图像水印,双水印的研究则更加少。因此提出了一种基于小波变换的双水印算法,在音频信号的小波变换域嵌入两个不同作用的水印,对一些音频处理有很好的鲁棒性的同时又能有效地判别音频信号的真实性和完整性。实验证明本算法的两水印分别具有很好的鲁棒性和敏感性,并实现了水印的盲提取。
Digital audio watermarking is an important part of watermarking technology. Study of digital audio watermarking is less than that of image recently, and dual watermarking is much less. This paper presents an algorithm of digital audio dual watermarking based on wavelet transform. Two different watermarks are embedded in DWT domain of audio. It is robust to many operations while it can distinguish authenticity and integrality of a piece of audio. The experimental results show that the watermarks have robust or sensitive to many signal operations respectively, and it is a blind algorithm.
出处
《微电子学与计算机》
CSCD
北大核心
2007年第8期31-34,共4页
Microelectronics & Computer
关键词
双水印
离散小波变化
量化
dual watermarking
discrete wavelet transform（DWT）
quantization
