Sony Vaio PCG-GRX516SP Instruction & Operation Manual page 45

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This sets the sound effects for the Jog Dial window display and Jog Dial functions.
Display/Sound tab
Enabling moving animation: This enables or disables the animation effects during Jog Dial window
display.
Transparency: You can drag the slider left or right to set the transparency of the Jog Dial window.
Sound when pressing Jog Dial: This specifies the sound file that is played when the Jog Dial is pressed.
Sound when spinning Jog Dial: This specifies the sound file that is played when the Jog Dial is rotated.