| 摘要 |
<p>PROBLEM TO BE SOLVED: To suppress the power consumption of an apparatus even when a signal level of an audio signal of any other output section than a main output section is less than a predetermined value.SOLUTION: A control section 23, when a function of a main output section 7 is off, a function of a zone 2 output section 8 is on and a function of a zone 3 output section 9 is off, a switch 15 for the main output section connects an analog audio input terminal 5 connected with the zone 2 output section 8 to the main output section 7 and, when a signal level of an audio signal detected by a DSP 13 is less than a predetermined value, shuts down supply of a power voltage to the zone 2 output section 8.</p> |
