I am playing around with FFT and cant seem to get the expected results. I have a sound clip that i recorded from a mic placed on an analogue clock. So it has a sound every second.
[wave,fs]=wavread('clock.wav'); t=0:1/fs:(length(wave)-1)/fs; plot(t,wave); n=length(wave)-1; f=0:fs/n:fs; wavefft=abs(fft(wave)); plot(f,wavefft);
This is the code that i am using. And here are the results.
I should be seeing a huge spike at 1hz but i am not.
The FFT followed by the sound wave.