PURPOSE: To output a simultaneously sampled data alternately by an sampling output circuit or to exchange sampling timings by converting a data sampled simultaneously into a data sampled alternately or vice versa in a digital audio system using ≥2 channels.
CONSTITUTION: A digital signal of both L and R channels sampled simultaneously is inputted to a sampling time converting circuit 21 so as to produce a sampling time converting value of either L or R channel signal, thereby obtaining a produced output 27. An analog signal 17 is obtained from the produced output by a digital-analog converter 13. Channel analog output signals 19 and 20 are obtained by switching the signal 17 at a switch circuit 28. Small black circles in figures (a), (b) representing a digital signal of both the channels in terms of an analog waveform indicate sampled times. The value shown in the mark X, a sampled time converted value is produced from either one of the values above in order to output alternately the signals above. Figure (c) being the converting result of the signals into an analog signal is a switching control signal of the switch 28.
ARAI TAKAO
NODA TSUTOMU
| JPS5320706A | 1978-02-25 |