modifying the loop filter output samples of each of the N channels with the modification signal to generate modified loop filter output samples for {HEAD ~ each} of {TAIL ~ the N channels} 
modifying the loop filter output samples of each of the N channels with the modification signal to generate modified loop filter output samples for { HEAD ~ each } of { TAIL ~ the N channels }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL