nrpn — Sends a Non-Registered Parameter Number to the MIDI OUT port.
Sends a NPRN (Non-Registered Parameter Number) message to the MIDI OUT port each time one of the input arguments changes.
kchan -- MIDI channel (1-16)
kparmnum -- number of NRPN parameter
kparmvalue -- value of NRPN parameter
This opcode sends new message when the MIDI translated value of one of the input arguments changes. It operates at k-rate. Useful with the MIDI instruments that recognize NRPNs (for example with the newest sound-cards with internal MIDI synthesizer such as SB AWE32, AWE64, GUS etc. in which each patch parameter can be changed during the performance via NRPN)