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