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Plotting response of multiple filters in single figure of freqz/freqs and fvtool ?

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ABTJ
ABTJ on 8 Jul 2020
Answered: Star Strider on 8 Jul 2020
The above link discusses about plotting multiple graphs(bode responses)in one figure
But how can we achieve this purpose in case of commands like freqz,freqs and fvtool?

Accepted Answer

Star Strider
Star Strider on 8 Jul 2020
This is likely the only option:
[h{1},w{1}] = freqz(rand(5,1),1, 2^16, 1000);
[h{2},w{2}] = freqz(rand(5,1),1, 2^16, 1000);
figure
subplot(2,1,1)
hold on
for k = 1:2
plot(w{k},20*log10(abs(h{k})))
end
hold off
grid
subplot(2,1,2)
hold on
for k = 1:2
plot(w{k},unwrap(angle(h{k})))
end
hold off
grid
.

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