Importance

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Abstract

[Problem] To improve the operability of a sound level operation performed with respect to a plurality of audio devices. [Solution] A control screen 25 is displayed, said control screen 25 comprising: channel faders 26-1 to 26-4 which individually accept sound volume level operations for wireless network compliant speakers 1-1 to 1-4; and a master fader 27 which accepts a sound volume level operation collectively for the wireless network compliant speakers 1-1 to 1-4. In the master fader 27, a minimum value end portion 271 is displayed in a position indicating a scale value that is the same as the minimum value from among the scale values indicated by each of the channel faders 26-1 to 26-4, and a maximum value end portion 272 is displayed in a position indicating the scale value that is the same as the maximum value from among said scale values. The master fader 27 thus has a width W corresponding to the minimum value and the maximum value of said scale values.

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First Claim