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NDTFourierTransform

NDTFourierTransform[expr, n, ]
gives a numerical approximation to the discrete time Fourier transform of expr evaluated at the numerical value , where expr is a function of n.
  • The numerical approximation to the discrete time Fourier transform of expr is by default defined to be NSum[expr 2 n , {n, -, }].
  • Different choices for the definition of the discrete time Fourier transform can be specified using the option FourierParameters.
  • With the setting FourierParameters->{a, b}, the discrete time Fourier transform computed by NDTFourierTransform is .
  • In addition to the option FourierParameters, NDTFourierTransform can also accept the options available to NSum. These options are passed directly to NSum.