Akai MPC X User Manual page 153

XY Mode with a manually controlled effect.
Use the Attack knob to set the length of the attack phase of the envelope, which is triggered when you touch the XY
pad. In other words, this determines how long it takes the effect to fully respond to your touch.
Use the Release knob to set the length of the release phase of the envelope, which is triggered when you release the
XY pad. In other words, this determines how long it takes the effect to fully deactivate after you stopping touching
the XY pad.
Use the Wet/Dry knob to set the blend the original signal (dry) and the effect signal (wet).
The X Axis and Y Axis fields show which parameters are controlled by each axis. This varies depending on the effect
you are using.
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