www.gusucode.com > signal 案例源码程序 matlab代码 > signal/FIRAndIIRDigitalFiltersExample.m
%% FIR and IIR Digital Filters % Use |designfilt| to design FIR and IIR versions of a highpass filter. % Specify a normalized stopband frequency of 0.3 and a normalized passband % frequency of 0.6. Verify that each filter is of the correct class. % Display the frequency responses of the filters. % Copyright 2015 The MathWorks, Inc. %% fir = designfilt('highpassfir','StopbandFrequency',0.3,'PassbandFrequency',0.6); iir = designfilt('highpassiir','StopbandFrequency',0.3,'PassbandFrequency',0.6); isfirFIR = isfir(fir) isiirFIR = isfir(iir) fvt = fvtool(fir,iir); legend(fvt,'FIR','IIR')