Whereas its predecessor SAFARI-FIPP was always run in a one-step mode, directly generating the time responses on the receiver array corresponding to the chosen source function, OASES-OASP is always run in a two-step mode in conjunction with the PP Pulse Post-processor. OASP generates the transfer functions for the selected environment and source- receiver geometry. The interactive postprocessor is then used to select time windows, source pulses, stacking format etc.
Since the computation of the transfer functions is by far the most computationally intensive part of synthetic seismogram computation, the 2-step mode will be most user friendly and efficient, except for cases where large batches of synthetic seismograms have to be generated. The transfer function file will have the same name as the input file, but extension .trf, i.e. for an input file input.dat, the transfer function file will be
input.trf.