results.m

这是一个优化IIR滤波器的源码,能设计出4个极点0个零点的IIR优化滤波器

%results.m
%Niranjan Damera-Venkata

a0=[-9.8608 -23.8060];
b0=[-23.8060 -9.8608];

a1=[-22.1834 -41.0461];
b1=[-24.9044 -0.2474];

i=linspace(0,1,100); 

figure;
plot(i,stepresp(i,a1,b1,[],[],1),'r');
hold on;
plot(i,stepresp(i,a0,b0,[],[],1));
hold off;

xlabel('Time t(sec)');
ylabel('Amplitude');
title('Step Response of optimized filter and initial guess');