Patent ID: 8917888

Claim:
A control terminal apparatus comprising: a transmitter configured to transmit and output a control signal to a plurality of audio output apparatuses; a display; and circuitry configured to detect an operation associated with display content in the display, cause the display to display individual volume setting sections which correspond to the audio output apparatuses and which include operation members capable of performing variable operations of volume settings while volume setting states are displayed and to display a master volume setting section including an operation member capable of performing collective variable operation in a state in which the balance of volumes of volume setting states of the audio output apparatuses is maintained, execute display of a setting changeable range in which the volume balance of the audio output apparatuses is maintained in the master volume setting section, the setting changeable range being based on a volume setting state of at least one of the audio output apparatuses, generate, when the circuitry detects an operation performed on one of the individual volume setting sections or the master volume setting section, a control signal corresponding to content of the operation, and cause the transmitter to transmit and output the control signal.