MATLAB-pca

用于解三对角方程的追赶法源代码，MATLAB编写，高斯列主元解线性方程组代码(Solution of tridiagonal equations for the pursuit method source code, MATLAB prepared)

说明：  ：针对MP3 编码方式和帧结构进行分析，利用帧中的比例因子提出了一种压缩域水印算法。算法通过引入帧变化分析步 骤，很好地实现了水印的自适应嵌入。对于不同的系统要求，还可以通过修改门限信噪比的值SNRlim按需进行水印嵌入，使算法 具有更大灵活性。同时在牺牲一定的嵌入空间前提下，实现了水印信息的自同步。实验表明，对于不同风格的音乐，该水印算法 具有很好的不可听性。(In this paper，the encoding method and the frame structure of MP3 are expounded in detail，a watermark algorithm is proposed based on the scale factor in MP3 frame.By introducing the step of frame altering analysis，the algorithm can realize that watermarks is embedded adaptively.By modifying threshold SNRlim（the ratio of signal to noise），the algorithm can meet different requirements of some system，that is what enable the algorithm to have a bigger flexibility.Based on expense of some embedding positions，the watermark can be embedded with self-synchronization.The experiment results show this algorithm can get a good audio effect with various types of audio.)

说明：  这是我从网上摘抄下来的，关于matlab语法与常用函数要点，供大家一起学习。(This is the excerpt from the Internet down, on the matlab function of grammar and common elements for all to learn together.)

以Griewank函数为测试对象，应用PSO算法优化求解(Use Griewank function for test object, apply PSO algorithm as the optimal solution)

matlab code for direction finding algorithm of MUSIC

用matlab编写的实现hermite插值法的代码，生成图像可显示第一节点，第二节点，误差点。(Prepared with the matlab code to achieve hermite interpolation to generate the image to show the first node, second node, the error point.)

人脸识别源码matlab，十分有效，精度达到90 (Face recognition matlab source)

基于MATLAB的扩频通信系统仿真研究,里面说明了扩频通信系统如何仿真(MATLAB-based spread-spectrum communications system simulation studies, which shows a spread spectrum communications system simulation how)

高斯过程建模matlab原程序，sinx比X的测试程序。希望有用(Gaussian process modeling matlab original program, sinx than X' s testing program. I hope useful)

atan function using cordic