📄 ex0427.asv
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% Chapter 4: Example 4.27:%b = [0 1 1]; a = [1 -0.9 0.81];[R,p,C] = residuez(b,a)pauseMp=abs(p')Ap=angle(p')/pipause%Frequency Response is beloww=[0:500]*pi/500;H=freqz(b,a,w);magH=abs(H);phaH=angle(H);subplot(211);plot(w/pi,magH);gridxlabel('frequency in pi units');ylabel('Magnitude');title('Magnitude Response')subplot(212);plot(w/pi,phaH/pi);gridxlabel('frequency in pi units');ylabel('Phase in pi units');title('Phase Response')
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