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.

C语言实现的FIR低通滤波器，经过在相关平台运行验证，貌似无误。-C language implementation of digital FIR low-pass filter, after running in response to a platform and correct.