f=idft(c); f=idft(c,N,dim);
idft computes a normalized or unitary inverse discrete Fourier transform. The unitary discrete Fourier transform is computed by
for \(l=0,\ldots,L-1\).
The output of idft is a scaled version of the output from ifft. The function takes exactly the same arguments as ifft. See the help on ifft for a thorough description.