3、oiseinthefilter,andwithingusefulsignalamplificationasmuchaspossibleandwithouttingdistortionandattenuationofnoiseasfaraspossible,thenthefiltercanextracttheusefulsignal.This curriculum design is the designing of the IIR band-stop filter. In this paper, the use of MATLAB in Digital Signal Process
4、ing and the design method of IIR analog band-stop filter.In this curriculum design,I main use the design method of Butterworth and the design method of Chebyshev, and give some specific MATLAB program and simulation results.Keywords:filtering;signal;filter;MATLAB4目录引言11滤波器的基本概念11.1滤波器的定义11.2滤波