Iwant to extract a 512 -sample segment of audio and use a hanning window on thesegment. Iwouldalso like to hop by 256 samples so tha each subsequent frameoverlaps the previous frameby 256 samples andstore thedft of each new frame. How would do this?

[y, fs]= wavread('low_town_groove.wav'); for i= 1:length(y)

        n=[1:256]

    x=n*hanning(256);
    X1=fft(x,256);
    x1=abs(X1);
   end

Answer 1

[Wayne King]

You can use spectrogram to do this quite easily. Otherwise you can use buffer() to divide your signal up into columns of a matrix with the specified overlap, then you just call fft() on the matrix.