基于扩频DCT变换的数字音频水印算法  

The Digital Audio Watermarking Algorithm Based on Spreading Spectrum DCT

作　　者：王晓盼[1] 王梅[1] 王洁[1] 

机构地区：[1]河北科技大学信息科学与工程学院,河北石家庄050000

出　　处：《通信电源技术》2015年第6期145-147,共3页Telecom Power Technology

摘　　要：扩频技术具有保密性好和较高的抗干扰能力等优点,使得扩频技术在数字音频水印系统版权保护方面的应用逐渐受到重视。将水印图像经过扩频处理后嵌入到数字音频信号离散余弦变换后的中频系数上,实现水印图像信号的嵌入和提取,通过MATLAB仿真软件进行实验仿真,再对其进行攻击实验来验证该水印嵌入算法的稳健性。The technology of spreading spectrum has the characteristics of good privacy and high noise immunity, etc. Therefore, the technology of spreading spectrum gradually becomes more and more popular in the application of copyright protection by using the digital audio watermarking system. Through embedding the watermark image which is dealing with the spread spectrum into the intermediate frequency coefficient which the DCT is transformed, realizing the embedding and extraction of watermark image signal. The experimental simulation by MATLAB software is done, and then attacking on their experiments to verify the robustness of the watermark embedding alzorithm.

关 键 词：数字音频水印 扩频 离散余弦变换 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]