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