www.gusucode.com > dsp 案例源码程序 matlab代码 > dsp/DesignAnIIRFilterExample.m
%% Design an IIR Filter % This example shows the two ways of designing an IIR Filter %% % Design the filter using |fdesign| and |design|. D = fdesign.comb('notch','N,BW',8,0.02); H = design(D,'systemobject',true) fvtool(H); %% % Design the filter using filter coefficients. b = [0.9 zeros(9,1)' -0.9]; a = [1 zeros(9,1)' -0.8]; H = dsp.IIRFilter('Numerator',b,'Denominator',a) fvtool(H);