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