计算短时傅里叶变换 stft_lfm

傅里叶变换和傅里叶变换的性质,周期信号和非周期信号的频谱分析,卷积和卷积定理,抽样信号的傅里叶变换和抽样定理,相关、能量谱和功率谱.(Fourier transform and Fourier transform nature, the cycle-cycle signal and the signal spectrum analysis, Convolution and convolution theorem, the sampling signal to the Fourier transform and sampling theorem related to the energy spectrum and the power spectrum.)

It contains basic theory about wireless communication

最新版的SVM工具箱，从新编译了qp.dll,解决了高版本不能运算的问题(The latest version of SVM toolbox, recompile the qp.dll, version can not solve the problem of high computing)

MatLab图形绘制功能口令及代码，很不错，值得看看(MatLab graphics rendering capabilities password and code, very good, worth a look)

说明：  数据输入形成节点导纳矩阵并用牛拉法解潮流计算(Solution of Power Flow by Niu-La Method)

利用Inmin01.m函数计算系统PID校正器参数的程序(The use of computing systems Inmin01.m function parameters PID correction procedures)

脉搏测量仪代码 主要功能是显示脉搏跳动次数，测试时间和上一次测试次数(Pulse measuring instrument code The main function is to display the number of pulse, the test of time and the last number of tests)

二维骨架仿真,使用matlab实现一个二维骨架效果的仿真。(Two-dimensional frame simulation, the use of matlab realize the simulation of a two-dimensional frame effect.)

butterworth lowpass filter used for finding speech signal.

一个小程序，用于分割GPS信号，很实用，可以试试。(A small program used to separate GPS signals, it is practical, you can try.)