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