IIR - Zadanie 1

fpass = 2000;
fstop = 2700;
bpass = 0.01;
bstop = 0.1;



E = (2*sqrt(bpass))/(1-bpass);
A = (1+bpass)/bstop;
Ap = -10*log10(1/(1+(E^2)));
As = -10*log10(1/(A^2));

[n, Wn] = buttord(2*pi*fpass,2*pi*fstop,Ap,As,'s');
[b, a] = butter(n, Wn, 's');

freqs(b,a);