Patch numbering
Program Change converter
Avoid an off-by-one mismatch between a MIDI value and a numbered display.
Value on the MIDI wire0
One-based display label1
This translates numbering conventions only. A device may remap received values or require Bank Select. The Prophecy has configurable program and bank maps.
Check the device map
A MIDI Program Change message carries a value from 0 to 127. Interfaces sometimes show it as 1 to 128. That translation does not tell you which patch a specific device will select. The original Korg Prophecy provides editable bank and program number maps.