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EMB Real FFT (DSP Module)

LabVIEW DSP Module 2.5 Help
August 2007

NI Part Number:
371300C-01

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Computes the real Fast Fourier Transform (FFT) of the input sequence X.

Details  

X is a real vector.
FFT real represents the real part of the FFT.
FFT imag represents the imaginary part of the FFT.

EMB Real FFT Details

The input sequence is real-valued.

This VI executes fast radix-2 FFT routines if the size of the input sequence is a valid power of 2.

size = 2m

where m = 1, 2,…, 10.

If the size of the input sequence is not a power of 2, this VI uses zero-filling of real data to the next power of 2.

The output sequence Y = Real FFT[X] is complex and is returned in two separate arrays—real and imaginary.

Y = YRe + jYIm


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