Outputted is {HEAD ~ data} over N sets of sound channels through time division multiplexing to {TAIL ~ M sets} of independent digital/analog converting means for converting sound channel digital data into an analog sound signal 
to
Outputted is { HEAD ~ data } over N sets of sound channels through time division multiplexing to { TAIL ~ M sets } of independent digital / analog converting means for converting sound channel digital data into an analog sound signal
OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH