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