Function: idft

IDFT  Inverse normalized Discrete Fourier Transform
  Usage: 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
  
                         L-1
    f(l+1) = 1/sqrt(L) * sum c(k+1)*exp(2*pi*i*k*l/L)
                         k=0

  for l=0,...,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.

Url: http://ltfat.github.io/doc/fourier/idft.html

See also: dft.

Package: ltfat