AUDIO AMPLIFIER, ELECTRONIC APPARATUS, AND AUDIO SIGNAL REPRODUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide an audio amplifier capable of high sound quality reproduction.SOLUTION: An audio amplifier 200 drives an electroacoustic conversion element 102. A power supply circuit 202 generates a power supply voltage Vcorresponding to a volume setting value VOL. A class-D amplifier 206 accepts the power supply voltage V. A pre-driver 204 drives the class-D amplifier 206 according to an audio signal in a DSD format.SELECTED DRAWING: Figure 2