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It s a type of codification or voice.

播放音乐，利用matlab来播放音乐，很好的一个代码(music play)

MATLAB高效编程技巧与应用25个案例分析(MATLAB and efficient programming techniques and applications 25 Case Studies)

How to do FFT spectral analysis

说明：  分形分析中很重要的Hurst指数的计算程序,并包含Hurst指数等于0.7和0.8的两个样本序列(Fractal Analysis of a very important Hurst index calculation program, and includes Hurst index equal to 0.7 and 0.8 in two samples of sequences)

tow combination or binomial coefficient, factorial and sort function

This method usually increases the global contrast of many images, especially when the usable data of the image is represented by close contrast values. Through this adjustment, the intensities can be better distributed on the histogram. This allows for areas of lower local contrast to gain a higher contrast. Histogram equalization accomplishes this by effectively spreading out the most frequent intensity values.

在PID控制中，微分信号的引入可改善系统的动态特性，但也易引起高频干扰。在误差扰动突变时尤其显出微分项的不足。若在控制算法中加入低通滤波器，则可使系统性能得到改善。(In PID control, the introduction of differential signal can improve the dynamic characteristics of the system, but it can also cause high-frequency interference. When error perturbations change abrupt, the deficiency of differential terms especially shows. If the low-pass filter is added to the control algorithm, the performance of the system can be improved.)

说明：  生命游戏置乱算法的MATLAB实现，用于置乱图像(life game Scrambling algorithm in MATLAB for image Scrambling)

531 matlab,use this to confire card safe.(531)