基于MATLAB7.0的音频水印采样量化算法.doc

基于 Matlab 的数字音频水印量化算法 【Abstract】Digital watermarking technology is a hot topic in recent years, copyright protection in the field of audio, wood paper, based on wavelet transform and discrete cosine transform digital audio watermarking, the extraction algorithm Matlab7.0 implementation. Experiments show that the algorithm for resampling, quantization, and MP3 compression attacks have robust. ? Key words: wavelet transform: DCT: Digital watermarking: Matlab 【摘要】:数字水印技术是近年来音频版权保护领域的一个热点，木文提出了一种基于小波变换和离散余弦变换的数字音频水印嵌入、提取算法的Matlab实现。实验表明，该算法对于重采样，重量化，及MP3压缩等攻击都具有较好的鲁棒性。 【关键词】:小波变换:离散余弦变换:数字水印:Matlab 一、 Introduction As an effective means of digital media works of intellectual property protection, digital watermarking has been widespread concern, and has become a hot international academic research. The digital watermarking technology related to the amount of people image, audio processing algorithms, mathematical tools, the amount of time people spend in programming and preparation of the algorithm If only using programming tools provided Hing functions to achieve. Therefore, a high-performance scientific and engineering calculation software is necessary. Matlab is currently very popular in domestic and foreign engineering design and system simulation software packages. It is The MathWorks introduced in 1982 a high-performance numerical computation and visualization software which provides image processing toolbox, wavelet analysis toolbox, digital signal processing toolbox write digital watermarking technology is a very good choice. Programs written using the above algorithm, only a few dozen statements can achieve a digital watermark. If these procedures written in C language or other high-level language program at least more than 100 lines. Muwen for digital audio watermarking itself. 一、引言 作为数字媒体作品知识产权保护的一种有效手段，数字水印得到了广泛关注，并己成为国际学术界研究的一个热点。而数字水印技术涉及到人量图像，音频处理算法、数学计算工具等，如果仅仅采用兴通编程工具所提供的功能来实现将花费人量的时间在上述算法的编程及调制上。因此，采用一种高性能的科学与工程计算软件是很有必要的。 Matlab是当前在国内外十分流行的工程设计和系统仿真软件