摘要
本文提出了一种基于独立分量分析ICA的音频数字水印方法。嵌入水印时,对原始音频文件进行一级小波分解,在分解得到的逼近分量中利用随机混合方法嵌入水印后进行小波逆变换形成嵌入水印的音频文件。提取水印时,对音频文件进行一级小波分解,用基于最大峰值的ICA方法进行水印提取。仿真实验结果表明,这种方法的强鲁棒性和可行性很强。
A method of digital audio watermarking based on independent component analysis is proposed in this paper. When embedding watermarks, the original audio is decomposed by a single-level discrete 1-Dwavelet transform, and watermarks are embedded in the obtained approximation coefficient vector by a method of random mixing,and an audio file is reconstructed by a reverse wavelet transform. When watermarks are extracted, the audio file is decomposed by a single-level discrete 1-Dwavelet transform, and watermarks are extracted by ICA based on Kurtosis maximization. Emulated experimental results show that this method is robust and feasible.
出处
《计算机工程与科学》
CSCD
2007年第7期41-44,共4页
Computer Engineering & Science
基金
国家自然科学基金资助项目(60373062)
教育部科研重点项目(03092)
湖南省杰出中青年基金资助项目(02JJYB012)
作者简介
李亚琴(1980-),女,陕西延长人,硕士生,研究方向为数字水印;
通讯地址:215104江苏省苏州市越湖路1158号苏州市职业大学计算机工程系;Tel:(0512)60706618;E-mail:vandersar9731@163.com
孙星明,教授,博士生导师,研究方向为网络信息安全,自然语言处理和分布式数据库。