Real FFT (Not in Base Package)

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

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

Real FFT Details

The input sequence is real-valued.

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

size = 2m, m = 1, 2,…, 23.

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

The output sequence Y = Real FFT[X] is complex and returns in one complex array

Y = YRe + jYIm