The filtered excursion signal may then be subtracted from {HEAD ~ a delayed version} of {TAIL ~ the original signal} to reduce the peak 
The filtered excursion signal may then be subtracted from { HEAD ~ a delayed version } of { TAIL ~ the original signal } to reduce the peak
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH