The Alternative Csound Reference Manual
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# nrpn

nrpn -- Sends a Non-Registered Parameter Number to the MIDI OUT port.

## Description

Sends a NPRN (Non-Registered Parameter Number) message to the MIDI OUT port each time one of the input arguments changes.

## Syntax

nrpn kchan, kparmnum, kparmvalue

## Performance

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)

## Credits

Author: Gabriel Maldonado
Italy
1998

New in Csound version 3.492

Thanks goes to Rasmus Ekman for pointing out the correct MIDI channel and controller number ranges.

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