| 摘要 |
PURPOSE:To prevent a click noize caused by relieving the mute movement suddenly by delaying mute signals, which causes when the error ratio becomes more than a constant value at least by one sampling section and inhibiting the output of an audio reproducing device by the signals. CONSTITUTION:A serial digital audio signal SD outputted from a DAD deck 1 is converted into a parallel audio signal PD by a serial/parallel converting part 2, and a signal PD enters into a speaker 6 through a latch circuit 3, a D/A converter 4 and a power amplifier 5. When an error ratio ER detected by an S/P converter 2 becomes more than a constant value, a mute signal MU is inputted into a control circuit 10 from a mute signal generating circuit and the contents of a latch circuit 3 is cleared by an active condition of the mute signal MX to inhibit the output of audio reproducing and prevent the occurrence of a click noize. |
