此程序是用matlab编写的FIR低通滤波器，为了区别于别人上传的都是调用了滤波器的现成函数filter，我自己用双重for循环编写了整个滤波过程，仿真已经通过-This program is written in matlab lowpass FIR filter, in order to distinguish it from other people upload are ready-made function of the filter is called filter, for my