Inverse Real FFT (Not in Base Package)

Computes the inverse real fast Fourier transform (FFT) or the inverse real discrete Fourier transform (DFT) of the input sequence FFT{X}. Details

FFT {X} is the complex input sequence.
X is the inverse real FFT of FFT{X}.
error returns any error or warning from the VI. Refer to Signal Processing Error Codes for more information about these conditions.

Inverse Real FFT Details

The input sequence is complex-valued. The Inverse Real FFT VI automatically determines the options, which are the inverse real FFT of a complex-valued sequence if the size is a power of 2 and the inverse real DFT of a complex-valued sequence if the size is not a power of 2.

The Inverse Real FFT VI executes inverse FFT routines if the size of the input sequence is a valid power of 2

m = 1, 2,…,23.

If the size of the input sequence is not a power of 2, the Inverse Real FFT VI calls an efficient inverse DFT routine.

The output sequence X = Inverse Real FFT[FFT{X}] is real, and it returns in one real array.