This reproduces pulse code modulated sound waveform data capable of simultaneously reproducing over {HEAD ~ a plurality} of sets of sound channels represented by a product of {TAIL ~ M} and N 
This reproduces pulse code modulated sound waveform data capable of simultaneously reproducing over { HEAD ~ a plurality } of sets of sound channels represented by a product of { TAIL ~ M } and N
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH