MMSE-equalization

将声音文件在时间轴上分割成几段，分别将段的秩序及某些段内的秩序颠倒，从而实现了对声音文件的加密。首先，先读取一个声音信号，对信号做1024点FFT变换，取完点之后，分成四个向量，四个向量组成一个矩阵，再对每一个向量进行转置，再重新整合，从而就实现了回密的过程。(Sound files on the timeline will be divided into paragraphs, each paragraph of the order and reversed the order of some paragraphs to realize the encryption of sound files. First, the first reading of a voice signal, the signal was 1024 points FFT transform, check after the completion point, divided into four vectors, the four vectors form a matrix, then for each vector transpose, re-integration, which will achieve a return to close the process.)

说明：  3D画图,matlab基础教程，适合新手学习入门........(Matlab based tutorial, suitable for novice learning introductory...)

超宽带脉冲幅度调制接收端频谱，与其他的几个共用(Ultra-wideband pulse amplitude modulation spectrum receiver, and some other common)

迹线法实现轮轨接触，是轮轨接触力及垂向力的基础内容，需要轮轨接触角及型面数据作为初始 内容(Trace method to achieve the wheel-rail contact, is wheel-rail contact force and the vertical force base, you need a wheel-rail contact angle and surface data as the initial content type)

A good survvy in the field of segment and other direction.How to choose a better method to improve the effect.

说明：  此代码是2个自由度的bouc-wen模型代码，如有漏洞，敬请指出(This code is a Bouc-Wen model code with 2 degrees of freedom. If there is a loophole, please point out)

利用GAS软件和Matlab编程实现空间统计分析,实现空间统计的过程(Use of GAS software and Matlab programming spatial statistical analysis, the process of spatial statistics)

可实现FFT功能的MATLAB源代码，具有应用背景，也可方便初学者学习FFT的原理及实践(FFT function can be realized MATLAB source code, with the application of the background can also be convenient for beginners to learn and practice the principles of FFT)

matlab判别分析，很好的数学建模资料内含数据和程序源码(Discriminant analysis )

用于空间信号叠加谐波个数判断，或者时间序列信号周期项个数判断(to decide the number of waves in singnal)