exam4_15.m

来自「Real-Time Digital Signal Processing Imp」· M 代码 · 共 11 行

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% exam4_15.m - magnitude and phase response of IIR filter
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b=[1];
a=[1, -1, 0.9];
[H,w]=freqz(b,a,128);
magH=abs(H);
angH=angle(H);
subplot(2,1,1),plot(magH),
subplot(2,1,2),plot(angH);