中文说明：在本节中，简单的 matlab 程序代码是提出了特定频率和 fft 的那波向秀波什么频率实际上有简单波生成代码。这个代码可以用来找到的任何一台机器在特定的频率振动频率
English Description：
In this section, a simple matlab code is presented which is a simple wave generation code of particular frequency along with fft of that wave to show what frequency that wave actually has .This code can be used to find frequency of any machine vibrating at a particular freq.