fir滤波器的主要程序，关于窗函数的。有海明窗-The main procedures of FIR filter

海宁窗函数下的低通滤波器，Low-pass filter Hanning window function under-Low-pass filter Hanning window function under

通过更改窗函数的类型，选择滤波器的类型来生成不同的滤波器-By changing the type of window function, and select the type of filter to generate different filter

短时傅里叶变换是一种基于窗函数的变换，短窗能够提供较好的时域解析度，长窗能够提供较好的频域解析度。-Short-time Fourier transform is a transform window function based on the short window in the time domain can provide better resolution, the long window can provide better resolution in the frequency d

设计一个一维滤波处理程序（1.分别做低通、高通、带通、带阻等理想滤波器进行处理；2.窗函数）-Design a one-dimensional filter processing program (1 respectively do low pass, high pass, band pass, band stop filter such as the ideal treatment 2 window function)