How do I hanning window a signal before FFT, inside of for loop?

I am attempting to hanning window a signal extracted from different software. I have been able to sucessfully plot the signal and a FFT of the signal. However, I would also like to use the hanning function to window the signal before I plot the FFT. I reviewed how to do so, but have not encountered examplees similar to mine, in which I am using a for loop. I have attached the code I am running. Any adivce would be greatly appreciated. Thanks.

[hosein Javan]

Hi. from what I understood from your code, you are trying to shift the window and calculate the fft of the windowed signal. if it is the case, is there any problem you have encountered?

Answer 1

[Sulaymon Eshkabilov]

Hi,

You can insert your anticipated hanning window command on line 81 of your script, i.e.,

hold on; WIN_Hann=hann(length(Displacement(:,i))); % Hanning window: line 81
F = fft(Displacement(:,i)'.*WIN_Hann);             % Hanning window applied: line 82 

Good luck