Design of fir filters using windowing technique

Respected Sir / Madam I am developing code for fir filters using windowing technique. During the check process I am not fining any difference for a with in the allowable band and out of the band frequencies. I am posting the code as well.I am failing to interpret the output spectrum. Your help will be priceless. Yours sincerely T.V.Chandra Shekar

```clc;
clear;
close;
omegap = 1200;
omegas = 1700;
fs = 8000;
rp = 0.01;
rs = 0.02;
wp = omegap/fs;
ws = omegas/fs;
N = ((-20*log10(sqrt(rp*rs)))-13)/(14.6*((omegas - omegap)/fs));
if (modulo(N,2)~=0) then
N1 = N;
N = N1-1;
else
N1 = N + 1;
end
disp(N);
[wft,hm,fr]=wfir('lp',floor(N1),[wp],"re",[0 0]);
disp(wft);
subplot(2,1,1);
plot(fr,hm);xgrid(color("green"));
a = gca();a.x_location = "origin";a.y_location = "origin";
xtitle('Rectangular Window','f Frequecy','Magnitude');
den = [zeros(1,(length(wft)-1)) 1];
numpol = poly(wft,'z','coeff');
denpol = poly(den,'z','coeff');
firtff = syslin('d',numpol,denpol);
n = 0:1023;
x = 2*sin(2*%pi*2900*n/fs);
y = flts(x,firtff);
Y = abs(fft(y));
f = (0:1023)*fs/1024;
subplot(2,1,2);
plot2d(f,Y);xgrid(color("green"));
xtitle('Magnitude Spectrum Of Output','Frequency f','Magnitude');```

Scilab 14-03-18, 6:26 a.m. chandrashekar
The windowing technique is a method of approximation that leads to the design of a filter whose frequency response is similar to that of the original system. It is suggested to be a useful https://masterbundles.com/templates/presentations/powerpoint/geometric/ source to download premium templates. The windowing technique has been used for designing low-pass, high-pass and band pass filters.
24-08-22, 4:03 p.m. Kreiger49

The design of FIR filters using the windowing technique is truly impressive! The way it seamlessly enhances signal processing is remarkable. I must say, the filters' efficiency and precision are commendable, and they perfectly cater to the specific needs of various applications. The engineers behind this innovative approach have truly outdone themselves. For anyone seeking top-notch filtering solutions, I highly recommend exploring this technique at this https://epaperlibrary.com/ site. It's a game-changer in the world of signal processing and opens up new possibilities for seamless data manipulation. Kudos to the brilliant minds behind this remarkable achievement!
04-08-23, 12:55 p.m. Kreiger49