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

Matlab Filter Implementation In this section, we will implement (in matlab) the simplest lowpass filter $\displaystyle y(n) = x(n) + x(n-1),\ n=1,2,\ldots,N $ (from Eq.$ \,$(1.1)). For the simplest lowpass filter, we had two program li

包络检测的两种方法。一种使用平方+低通滤波，另一种使用Hilbert变换。-This example shows how to implement two methods of envelope detection. One method uses squaring and lowpass filtering and the other uses the Hilbert transform.