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