| 摘要 |
PURPOSE:To simplify the volume adjustment and balancer regulation of a multichannel amplifier by adjusting a balancer while regulating the volume of every channel with a control signal. CONSTITUTION:When volume control signals are applied as five-bit binary signals to input terminals 7-11, the control signal controls left and right variable attenuators 1 and 4 through adders 3 and 6 and decoders 2 and 5. In this case, if adders 3 and 6 are applied from input terminals 12 and 13 with balancer control signals expressed by the same binary codes with the volume control signals, variable attenuator 1 or 4 is controlled to obtain desired balancer effect. |
