The filter system filters a corresponding excursion signal having a magnitude and waveform corresponding to the portion exceeding {HEAD ~ the threshold} to remove {TAIL ~ unwanted frequency components} from a scaled version of the excursion signal 
to remove
The filter system filters a corresponding excursion signal having a magnitude and waveform corresponding to the portion exceeding { HEAD ~ the threshold } to remove { TAIL ~ unwanted frequency components } from a scaled version of the excursion signal
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH