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Computes inverse real 1- or 2-D Fast Fourier transform.
rffti
x (NxK matrix) – data
y (LxM real matrix) – where \(L\) and \(M\) are the smallest prime factor products greater than or equal to \(N\) and \(K\).
It is up to the user to guarantee that the input will return a real result. If in doubt, use ffti().
ffti()
See also
Functions rfft(), fft(), ffti(), fftm(), fftmi()
rfft()
fft()
fftm()
fftmi()
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