KhaledOsmani
Full Member level 6
Hello,
please check the following code:
What type of filter is being designed as the nominal filter by the above code? what are its specifications? what is the order of the filter?
what are the cutoff frequencies of the filters being designed?
How to modify the above code so I can be able to determine and plot the gain response of the delay complementary filter of each of the filters being designed in it?
please check the following code:
Code:
%Illustration of tunable FIR Filter
clf;
clc;
close all;
w = 0:pi/255:pi;
f = [ 0 0.36 0.46 1];
m = [1 1 0 0];
b1 = remez(50, f, m);
h1 = freqz(b1,1,w);
m1 = 20*log10(abs(h1));
n = -25:-1;
c = b1(1:25)./sin(0.41*pi*n);
wc = ]0.31*pi 0.51*pi];
for i = 1:2
d = c.*sin(wc(i)*n);
q = (b1(26)*wc(i))/(0.4*pi);
b2 = [d q fliplr(d)];
mag(i,:) = 20*log10(abs(freqz(b2,1,w)));
end
plot (w/pi,mag(1,:) , 'b--', w/pi,m1, 'r-', w/pi, mag(2,:), 'g-');
grid;
axis([ 0 1 -80 5]);
xlabel('\omega/\pi');
ylabel('Gain, dB');
legend ('\omega_{c} = 0.31 \pi','\omega_{c} = 0.41/pi ' , '\omega_{c} = 0.51 \pi')What type of filter is being designed as the nominal filter by the above code? what are its specifications? what is the order of the filter?
what are the cutoff frequencies of the filters being designed?
How to modify the above code so I can be able to determine and plot the gain response of the delay complementary filter of each of the filters being designed in it?
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