quantizing the modified loop filter output samples of {HEAD ~ each} of {TAIL ~ the N channels} to generate delta sigma modulator quantizer output samples for each of the N channels; and 
of
quantizing the modified loop filter output samples of { HEAD ~ each } of { TAIL ~ the N channels } to generate delta sigma modulator quantizer output samples for each of the N channels ; and
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH