| 摘要 |
PURPOSE:To make it unnecessary to adjust a fader control circuit even in the unbalanced state of divided signals by adding divided signals whose balance is adjusted and forming a sound field. CONSTITUTION:The balance of an acoustic-electric signal vL is adjusted by the fader control circuit to form divided signals v1FL, v1RL. These signals v1FL, v1RL, are mutually added by an adder 4 to form a signal vL, a sound field control device 3 is controlled by the signal vL and signals outputted from the device 3 and one of the divided signals v2FL, v1FL, and one of the signals v2RL, v1RL are selected by a switch part 2 to form a sound field. The configuration for adding the divided signals makes it unnecessary to adjust the fader control device even in the unbalanced state of the divided signals, so that easiness for using the sound field control device can be improved even in the driving of an automobile. |
