| 摘要 |
PROBLEM TO BE SOLVED: To properly change a volume value of an amplifying apparatus in accordance with a variation of a controller side volume value, when the controller side volume value is changed.SOLUTION: An AV amplifier, when an amplifier side volume value is input by a user's operation, controls the volume value of an amplifying apparatus, converts the amplifier side volume value into a controller side volume value, and transmits the controller side volume value to a controller. The controller, on receiving the controller side volume value, moves a slide bar. Alternatively, when a controller side volume value is input by a user's operation, the controller moves the slide bar and transmits the controller side volume value to the AV amplifier. The AV amplifier, on receiving the controller side volume value, converts the controller side volume value into an amplifier side volume value, and controls the volume value of the amplifying apparatus on the basis of the amplifier side volume value. |
