本文件包含两个MATLAB程序。两个程序分别设计了切比雪夫1型低通滤波器和切比雪夫1型带通滤波器，实现特定频率信号的滤除。-This document contains two MATLAB program. Both programs were designed Chebyshev a low pass filter and Chebyshev type band-pass filter to filter out specific frequency signals to achieve.

本教程使用的DSP库来自ARM官方，此库支持以CM0，CM3，CM4以及CM7为内核的所有MCU。本章节讲解IIR滤波器的Matlab设计，主要包括巴特沃斯滤波器，切比雪夫I型和II型滤波器以及椭圆滤波器。-This tutorial uses a DSP library the ARM official, this library supports CM0, CM3, CM4 and CM7 for the kernel of all MCU.