AUDIO OUTPUT CONTROL DEVICE, METHOD THEREOF, PROGRAM THEREOF, AND RECORDING MEDIUM CONTAINING THE PROGRAM

摘要

An automatic sound volume correction unit (400) of a music composition reproducing device uses a digital attenuator (452) for amplifying a digital detection signal corresponding to the level of the sound detected by a noise detection unit (410) by a gain of the gain control signal acquired from gain control signal generation means (455) and outputting it to noise level detection means (453). Sound volume control signal generation means (456) controls an electronic volume (440) so as to output a music composition from sound generation means with a corrected sound volume corresponding to the noise level based on the digital detection signal. When the gain control signal generation means (455) recognizes that the vehicle has stopped, it generates and outputs a gain control signal relating to a gain for the digital attenuator (452) to output a digital detection signal corresponding to a noise level of a predetermined level.