| 摘要 |
PROBLEM TO BE SOLVED: To reduce pop noise in a class D amplifier. SOLUTION: A reproducing device 1A includes: a first driving circuit 12 for supplying a first output signal OUTP obtained by performing class D amplification of a first pulsewidth modulation signal 11a to one input terminal of a lowpass filter 20; a second driving circuit 13 for supplying a second output signal OUTN obtained by performing class D amplification of a second pulsewidth modulation signal 11b to the other input terminal of the lowpass filter 20; and a delay circuit 40 for delaying the first output signal OUTP only for a predetermined time to generate a control signal CTL and performing control to stop output of the first output signal OUTP and the second output signal OUTN when a mute signal MUTE is supplied from the outside. COPYRIGHT: (C)2011,JPO&INPIT
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