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

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Lim Sky 2015-7-17

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https://ww2.mathworks.cn/matlabcentral/answers/230245-how-to-segment-an-wav-file-off-to-2-second-interval-and-fft-every-2-second

回答： Manolis Michailidis 2015-7-18

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

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Eric Pahlke 2015-7-17

plotfft.m

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 2015-7-18