| 摘要 |
PROBLEM TO BE SOLVED: To obtain a surround signal from a headphone use output terminal while obtaining a usual front signal of a sound output means by outputting a sound different from a sound of an output of the sound output means from the headphone use output terminal. SOLUTION: In the case of outputting a control signal to select a front signal of a contact (a) from an output control means 37 to an output selection means 30, a control signal to select a contact (c) of an output of an amplifier means 32 is outputted to a changeover means 33. Then a front speaker sound signal is outputted from a sound output terminal 40 and a surround sound signal is outputted from a headphone use output terminal 34. Thus, the sound effect is set in two-dimension in matching with the sound of the front speaker by connecting a rear speaker amplifier and the speaker to the headphone use output terminal 34. If the rear speaker system is not in use, the connection of the headphone use output terminal 34 is simply removed without revamping the wire of the device. |
