Akai iMPC for-iPhone - Manual (Page 7)

Perform
This view provides the features you need to tweak your beats on the fly…
Note Repeat
Press and hold the Note Repeat button and swipe the window field to select the repeat interval.
16 Levels
This feature maps the selected sample across all the pads, with each pad varying slightly in the parameter
selected in the window. Tap the 16 Levels button to enable the feature for the selected pad, and tap the
button again to disable the feature.
Variation Slider
Move the Variation Slider to adjust the parameter selected in the window for the selected pad.
Erase
Press and hold the Erase button and the pad you want to erase during playback to erase the note.
Undo
Tap the Undo button when highlighted to undo the last recorded session.