摘要
提出了一种在数字音频信号中嵌入水印的新算法,算法首先对数字音频信号作多尺度离散小波变换(DWT),然后在离散小波变换域内通过改变一些中频系数的方法嵌入水印.嵌入水印后的音频信号与原始音频信号在听觉上是相似的.仿真试验表明该算法具有较强的稳健性,可用于数字音频产品的版权保护.
A new algorithm for embedding digital watermarking into audio signals based on the discrete wavelet transform(DWT) is discussed in this paper. The watermark is embedded into the audio signals by modifying some of its coefficients in DWT domain. Results of the emulational experiments show that the algorithm is robust. It can be used for copyright protection.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
2004年第2期203-206,共4页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
陕西省教育厅产业化培育项目(02JC40)
陕西省自然科学研究计划项目(2001X29)
关键词
离散小波变换
数字水印
版权保护
discrete wavelet transform
digital watermarking
copyright protection
