NInverseDTFourierTransform[expr, , n] gives a numerical approximation to the inverse discrete time Fourier transform of expr evaluated at the integer n, where expr is a periodic function of with period 1.
To use NInverseDTFourierTransform, you first need to load the Fourier Series Package using Needs["FourierSeries`"].
The numerical approximation to the inverse discrete time Fourier transform of expr is by default defined to be .
Different choices for the definition of the inverse discrete time Fourier transform can be specified using the option FourierParameters.
With the setting FourierParameters->{a, b}, expr is assumed to have a period of , and the inverse discrete time Fourier transform computed by NInverseDTFourierTransform is .
The parameter b in the setting FourierParameters->{a, b} must be numeric.
In addition to the option FourierParameters, NInverseDTFourierTransform can also accept the options available to NIntegrate. These options are passed directly to NIntegrate.
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, and the inverse discrete time Fourier transform computed by NInverseDTFourierTransform is 
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EXAMPLES
Basic Examples 
