how to impement hanning window for following code
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As=40;
passbandfreq=0.01;
transitionwidth=500;
normalizedtransitionwidth=transitionwidth/fsamp
fsamp=10000;
fc=1200;
fcn=fc/fsamp
passbandfreq=10^(passbandfreq/20)-1
stopbandfreq=10^(-As/20)
delta=min(passbandfreq,stopbandfreq)
%%using hanning window
N=3.1/normalizedtransitionwidth
hn=hanning(N); % hanning
[H,f]=freqz(hn,1.512,fsamp);
mag=20*log10(abs(H))
plot(fcn,mag),grid on
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