基于听觉掩频效应的数字水印算法设计  

Design of the Digital Watermark Algorithm Based on Human Auditory Masking

作　　者：邱志宏[1] 

机构地区：[1]柳州职业技术学院,广西柳州545006

出　　处：《微电子学与计算机》2012年第12期129-132,共4页Microelectronics & Computer

基　　金：广西教育厅科研课题(200103YB168)

摘　　要：针对音频文件中嵌入数字水印的应用需求,提出了基于掩频效应的数字水印嵌入原理,详细阐述了利用掩频效应实现音频数字水印的嵌入流程和提取流程,给出了数字水印嵌入和提取过程中的关键计算函数.对所设计的音频数字水印算法进行了实验测试和分析,测试结果表明:本文算法具有良好的不可见性和鲁棒性,能够抵御常见的数字水印攻击方法,但在抗采样点的剪切攻击时采样效果性能尚不理想.This paper designs atheory of digital watermark embedding on basis of frequency masking effects to solve the application of digital watermark embedding in audio files. It also details the process for watermark embedding and extracting by using the masking effects, and provides the key calculation functions during the two processes. After testing and analyzing the designed watermark algorithms, it can be learned that the embedding algorithm in this study has a better invisibility and robustness which can resist the common attack method of digital watermarks. However, the sampling results are not desired when it meets the cropping attack on the anti-sampling points.

关 键 词：数字水印 音频 掩频 剪切攻击 水印嵌入 提取 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]