Calculates the inverse Discrete Fourier Transform of any series or series expression in Real/Imaginary form.
An input series or array.
A series or table.
Try setting up a three Window Worksheet:
W1: gsin(128, 0.01, 1.0)
Windows 2 and 3 will produce the same results, however the IDFT will be considerably slower.
The IDFT returns the same result as an IFFT. Although the IDFT is a more straightforward method than the IFFT is for calculating the Discrete Fourier Transform, it is also a much slower algorithm.
Oppenheim and Schafer.
Digital Signal Processing
Prentice Hall, 1975
Digital Signal Processing Committee
Programs for Digital Signal Processing
I.E.E.E. Press, 1979