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