Audio signal output apparatus for simultaneously outputting a plurality of different audio signals contained in multiplexed audio signal via loudspeaker and headphone

An audio signal output apparatus for simultaneously outputting different audio signals contained in a multiplexed audio signal via a loudspeaker and a headphone, the audio signal output apparatus comprising:

• a first volume and balance adjuster for adjusting a volume and balance state with respect to the loudspeaker;
• a second volume and balance adjuster for adjusting a volume and balance state with respect to the headphone;
• a switching circuit for providing a first audio signal included in the multiplexed audio signal to the first volume and balance adjuster, and applying a second audio signal included in the multiplexed audio signal to the second volume and balance adjuster so that the first and second audio signals are respectively output at the same time via the loudspeaker and the headphone;
• and
• a microcomputer for controlling volume and balance adjustment operations of the first and second volume and balance adjusters and controlling operation of the switching circuit.