Fourier Transform of window functions
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Hello!
I am trying to figure out how to graph the fourier transform of different window functions but i cant seem to get the correct image like the one i attached for my fft window graph.
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Mathieu NOE
le 18 Nov 2022
hello
maybe this can help you
wL = 30; % window length
win1 = hanning(wL);
win1 = win1/sum(win1); % normalize
win2 = triang(wL);
win2 = win2/sum(win2); % normalize
nfft = 256;
S1 = fft(win1,nfft);
S2 = fft(win2,nfft);
f = 1:nfft/2+1;
plot(f,20*log10(abs(S1(1:nfft/2+1))),f,20*log10(abs(S2(1:nfft/2+1))));
ylabel('dB gain')
xlabel('fft bins');
legend('hanning','triangle');
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