M-Audio manual Appendix C - Additional RPN Messages, KeyRIg 49 User Guide, Controller Number

KeyRIg 49 User Guide 22

Appendix C - Additional RPN Messages

You may have noticed that although we have stated there are 128 MIDI controller messages (0 – 127), Appendix B shows 132 assignable controller messages. This is because messages 128 – 131 are a different type of MIDI message, defined in the MIDI Specification as RPN messages. M-Audio has created four messages that are sent like MIDI CCs, but actually transmit a series of RPN messages. This makes sending these complex multi-part messages as easy as sending a MIDI CC message. You can assign these to the controls on your KeyRig 49 keyboard in exactly the same way as any other MIDI controller message. The RPN messages control the following:

Controller Number	MIDI Message	Use
128	Pitch Bend Sensitivity	Alters the range of a pitch bend message
129	Master Tune (coarse)	Adjusts the tuning of your sound module or synthesizer in large steps
130	Master Tune (fine)	Adjusts the tuning of your sound module or synthesizer in small steps
131	Monophonic Aftertouch*	Adds a vibrato effect

*Monophonic aftertouch is not an RPN message. However, it is an additional effect message defined in the General MIDI specification and this is why we have included it in Appendix C.