此文档是使用C语言实现数字滤波，对高通或低通滤波器的C语言程序介绍。,This document is the use of C language realization of digital filter for high-pass or low-pass filter to introduce the C language program.

//在单片机系统中常用的滤波算法 （1）程序判断法（2）中值滤波法 （3）算术平均滤波法 （4）加权平均滤波法（5）滑动平均滤波法 （6）低通滤波法（7）中位值平均滤波 -//In the single-chip microcomputer system used in the filtering algorithm [1] procedures to determine law [2] Median Filter Method [3] arithmetic mean