KORG PA4X 76 - Manual (Page 815)

Connecting MIDI devices |811
Midi In Octave Meaning
On Notes received on the MIDI IN and USB DEVICE ports are transposed
according to the Octave Transpose setting for each Sound.
Off Data received on the MIDI IN and USB DEVICE ports are not trans-
posed.
Applying octave transposition to the Upper and Lower parts
1 Go to the Global > MIDI > MIDI IN Controls page.
2 Use the Upper Trk Octave Transp. and Lower Trk Octave Transp. param-
eters to transpose the MIDI notes received on the Upper and Lower parts.
Upper/Lower Octave Meaning
-2…0…+2 Notes received on the MIDI IN and USB DEVICE ports are transposed
by the number of selected octaves. For example, if you select the +1
value, a C4 received via MIDI will play a C5 on Pa4X.
These parameters may be useful to many MIDI accordion players, whose
MIDI interface may be transmitting on an unexpected octave.