code: def _postgenerate(self, res):
          
          hp, hc = res
          try:
              hp = taper_timeseries(hp, tapermethod=self.current_params['taper'])
              hc = taper_timeseries(hc, tapermethod=self.current_params['taper'])
          except KeyError:
              pass
          return hp, hc
docs: Applies a taper if it is in current params.