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DTFourierTransform

DTFourierTransform[expr, n, ]
gives the discrete time Fourier transform of expr as a function of , where expr is a function of n.
  • The discrete time Fourier transform of expr is by default defined to be expr 2 n .
  • DTFourierTransform returns a periodic function of with default period 1.
  • 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 DTFourierTransform is , a periodic function of with a default period of .