Patent attributes
A drive apparatus for volume control devices is provided for setting, promptly and exactly, the position of a control device such as a fader to its standard position. A first volume control device (127-1), an operation position thereof is operative automatically, is provided for controlling a first gain of an audio signal. A position control device (128-1) is provided correspondingly to the first volume control device. A second volume control device (124-1), an operation position thereof is operative automatically, is provided for controlling a second gain of the audio signal, so that a total gain applicable to the audio signal is determined by the operation positions of the first and second volume control devices. A controller is provided for setting, when the position control device is operated, the operation position of the first volume control device to a pre-specified standard position (0 dB), and for setting the operation position of the second volume control device to a position where a previous total gain before the position control device is operated is maintained.
