| 摘要 |
PROBLEM TO BE SOLVED: To provide a user friendly interface. SOLUTION: This controller 10 is provided with a knob 21 capable of intuitively controlling a sound volume in the same way as an audio so that the controller 10 can be freely connected to a PC through a USB connector 23. Thus, it is possible to realize an interface designed so as to be intuitively and comfortably operable by providing the controller 10.
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