RESAMPLE /FFT

###
RESAMPLE /FFT

            RESAMPLE /FFT

        The resampling is done in the delay domain  and  the  data  are  Fourier
        transformed.   The  Fourier transform is divided by the transform of the
        input channel shape, then extrapolated by zeroes  (if  interpolation  in
        the  frequency  domain  is required), multiplied by the transform of the
        desired channel shape, and finally transformed back to frequency domain.
        The  output  channel separation usually needs to be slightly rounded (to
        enable use of the FFT, the input spectrum must contain a round number of
        output channels).