How to segment an wav file off to 2 second interval and FFT every 2 second.

I have facing problem on how to segment an wav file off to 2 second interval and FFT every 2 second. My wav file is 65 second long and my sampling rate is 44100hz. My coding : [y,fs]=audioread('C:\Users\Sky\Desktop\Discrete Time signal processing\ASGN(1)\ESNoise.wav'); I was stuck

[Eric Pahlke]

I'm not sure what part of the process you're having trouble with.

Is the issue in separating out the sub-arrays of length 88200, or in using fft()?

fft() is a little tricky... see my function attached. It takes a data vector and a time vector and computes an amplitude vector and a frequency vector. It handles the little details of using fft() such as padding to get to a power of 2 length and correctly computing the frequency vector.

[Lim Sky]

Eric Pahlke, ya, i was stuck on the issue in separating out the sub-arrays of length 88200, you have any solution ?

Answer 1

[Manolis Michailidis]

There is the spectrogram take a look here http://www.mathworks.com/help/signal/ref/spectrogram.html which performs STFT. Also if your issue is framing there is the buffer function http://www.mathworks.com/help/signal/ref/buffer.html.