Return signal having IFFT

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Blanca Castells
Blanca Castells 2017-3-9
评论： Blanca Castells 2017-3-13
Hello!
I have a function f(OM,T) which depends on two variable: frequency and time; and I now that this function is the Verse Fast Fourier transform of another function g(T). How can I get the second function g(T)?
THANKS

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Jyotish Robin
Jyotish Robin 2017-3-13
Hi!
I assume that you meant to say 'f' is the inverse fourier transform of the function 'g'.
If that is the case, finding the FFT of 'f' will give you 'g'.
The following doc link will point you towards how to calculate FFT in MATLAB:
https://www.mathworks.com/help/matlab/ref/fft.html
Hope this helps!
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Blanca Castells
Blanca Castells 2017-3-13
Yes, my keyboard always changes my sentences in English haha.
My problem is that I have a handle function instead of a vector, can I use fft command with it? Because I've seen in some articles something like this:
f=@(OM) F(OM);
OM=[0:0.01:100];
g=fft(f(OM))
But what I get with that is another vector instead a time-dependant function.
Thankyou for the answer!

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