基于能量量化的音频水印算法  

Energy Quantization Based Audio Watermarking Algorithm

作　　者：王卓[1] 赵千川[1] 

机构地区：[1]清华大学自动化系,北京100084

出　　处：《计算机工程与应用》2004年第26期48-51,55,共5页Computer Engineering and Applications

基　　金：国家自然科学基金项目(编号:60074012;60274011);国家攀登计划预研项目(编号:970211017);教育部留学人员回国启动基金;清华大学985基础研究基金(编号:985信息-07-基金-07)

摘　　要：数字水印技术被认为是一种版权保护的重要手段得到了广泛的研究和应用。论文提出了一种基于音频段能量量化的时域音频水印技术,嵌入的水印有良好的隐蔽性,检测过程不需要使用原始信号。实验表明算法对MP3压缩、低通滤波、重采样等常见的攻击手段有满意的鲁棒性。论文还进行了能量量化方法检测错误率的理论分析和自适应量化机制的拓展。Digital watermark techniques have been regarded a s a main method for copyright protection and has been widely studied and applied .This paper proposes a new method for embedding digital watermarks into audio s ignals in the time domain,which is based on the energy quantization.There is no perceptible different between the watermarked signal and original signal.Or iginal signal is not needed in the watermark detecting process.The experimental results show that the algorithm is robust to the most popular attacks such as M P3compression,low-pass filtering and resample pro-cessing.The error rate of detected bits analysis and the auto-adaptation quantization extension also are presented.

关 键 词：版权保护 数字水印 音频处理 能量 量化索引调制 QIM 

分 类 号：TP309.2[自动化与计算机技术—计算机系统结构]