摘要
文章提出了一种基于频率掩蔽效应的自适应音频数字水印算法。嵌入的水印为视觉可辨的二值图像,水印能根据音频信号的频域掩蔽阈值进行自适应调整,水印的提取采用假设检验的方法。实验结果表明所嵌入的水印是不可感知的,该算法对大多数音频信号处理具有很强的鲁棒性,如重采样、MP3压缩和随机裁剪等操作。
An adaptive audio digital watermarking method based on frequency masking is proposed in this paper.The watermark embedded in this algorithm is a significant binary image and adaptively embedded according to frequency masking threshold of audio signal.The watermark can be extracted by hypothesis test.The experimental results show that the watermark embedded is imperceptible and the algorithm is robust to many attacks,such as,resampling,MP3compression,random cutting and so on.
出处
《计算机工程与应用》
CSCD
北大核心
2004年第15期31-33,64,共4页
Computer Engineering and Applications
基金
国家教育部科学技术研究重点项目基金(编号:204061)
宁波市软件产业基金(编号:R200303)
宁波市信息技术创新基金(编号:2002660
2002661)
关键词
数字水印
音频
频率掩蔽
digital watermarking,audio,frequency masking
