Dynamic adjustment of master and individual volume controls

A computer-implemented system, comprising:

• one or more data processors;
• and
• one or more non-transitory computer-readable storage media including instructions configured to cause the one or more data processors to perform operations including:
• providing a graphical interface including a master volume control and one or more individual volume controls, an individual volume control including a setting for controlling a volume of an individual audio output device and the master volume control including a setting for controlling the one or more individual volume controls, the one or more individual volume controls having one or more initial relationships with the master volume control;
• receiving an adjustment of a setting of a volume control, wherein:
• when the adjustment of the setting of the volume control is received on an individual volume control and the adjustment of the setting of the individual volume control exceeds the setting of the master volume control:
• adjusting the setting of the master volume control, wherein when the graphical interface includes other individual volume controls, settings of the other individual volume controls are not adjusted;
• and
• when the adjustment of the setting of the volume control is received on a master volume control:
• adjusting the setting of the individual volume control in proportion to the adjustment of the setting of the master volume control, wherein the setting of the individual volume control is adjusted in proportion to the adjustment of the setting of the master volume control to preserve a relative volume difference between the individual volume control and the master volume control.

A computer-program product tangibly embodied in a non-transitory machine readable storage medium, including instructions configured to cause a data processing apparatus to:

• provide a graphical interface including a master volume control and one or more individual volume controls, an individual volume control including a setting for controlling a volume of an individual audio output device and the master volume control including a setting for controlling the one or more individual volume controls, the one or more individual volume controls having one or more initial relationships with the master volume control;
• receive an adjustment of a setting of a volume control, wherein:
• when the adjustment of the setting of the volume control is received on an individual volume control and the adjustment of the setting of the individual volume control exceeds the setting of the master volume control:
• adjust the setting of the master volume control, wherein when the graphical interface includes other individual volume controls, settings of the other individual volume controls are not adjusted;
• and
• when the adjustment of the setting of the volume control is received on a master volume control:
• adjust the setting of the individual volume control in proportion to the adjustment of the setting of the master volume control, wherein the setting of the individual volume control is adjusted in proportion to the adjustment of the setting of the master volume control to preserve a relative volume difference between the individual volume control and the master volume control.