DataXferFunc
This is a Data Header variable.
Type = Boolean
DataXferFunc tells the User Math FFT Fast Fourier Transform: A mathematical operation performed on a time-domain signal to yield the individual spectral components that constitute the signal. See Spectrum./IFFT Inverse Fast Fourier Transform code that the data acts like a transfer function. The FFT should scale the data up so the frequency response has a magnitude near one. The IFFT should scale the data down so the impulse response peak is near one. For IFFT, the time data should be centered around zero.