基于MATLAB的IIR低通滤波器设计

电子料学系本科生毕业论文〔设计)AbstractDigital filter is an important part of digital signal processing.In fact,digitalfilter is a kind of operation process.The function of digital filter is to convert a groupof input digital sequences into another group of output digital sequences after acertain operation,so it is a kind of digital processing equipment.Compared with theanalog filter,the digital filter has the advantages of high precision,strong stability,flexible implementation and easy to large-scale integration.Therefore,it is widelyused in communication,radar,remote sensing,sonar,satellite communication,spacenavigation,measurement,voice,biomedical and other fields of signal processing.This paper mainly analyzes the basic principle of IIR filter and discusses the fastdesign method of IIR digital filter in MATLAB environment.Key words:low pass filter;MATLAB;digital signal processing