RESAMPLE SHAPE
Keywords: class

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RESAMPLE SHAPE

        Four keywords are used to describe the frequency response of the synthe-
        sized channels:
        - TBOX  means  a  rectangular  function  in the delay domain, as for un-
                smoothed correlator channels (sin(pi.x)/(pi.x) in the  frequency
                domain)
        - TPAR  means  a parabolic function in the delay domain, as for smoothed
                correlator channels (smoothing function used at Plateau de Bure)
        - FBOX means a rectangular function in the frequency domain (as for fil-
                terbank channels)
        - FTRIANGLE  means a triangular function in the frequency domain (as for
                filterbank channels, Hanning smoothed)

        The shape of the input channels is derived from the backend number  read
        in  the  telescope  name  for IRAM-30m spectra: TBOX for autocorrelator,
        FBOX for other (filter) backends. Otherwise, rectangular filter channels
        are assumed.