outkpc — Sends MIDI program change messages at k-rate.
kchn -- MIDI channel number (1-16)
kprog -- program change number in floating point
kmin -- minimum floating point value (converted in MIDI integer value 0)
kmax -- maximum floating point value (converted in MIDI integer value 127 (7 bit))
outkpc (k-rate program change output) sends program change messages. It works only with MIDI instruments which recognize them. These opcodes can drive a different value of a parameter for each note currently active.
It can scale the k-value floating-point argument according to the kmin and kmax values. For example: set kmin = 1.0 and kmax = 2.0. When the kvalue argument receives a 2.0 value, the opcode will send a 127 value to the MIDI OUT device. When the kvalue argument receives a 1.0 value, it will send a 0 value. k-rate opcodes send a message each time the MIDI converted value of argument kvalue changes.
Here is an example of the outkpc opcode. It uses the file outkpc.csd.
Example 583. Example of the outkpc opcode.
See the sections Real-time Audio and Command Line Flags for more information on using command line flags.
This example generates a program change and a note on Csound's MIDI output port whenever a note is received on channel 1. Be sure to have something connected to Csound's MIDI out port to hear the result.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform ; Audio out Audio in No messages -odac -iadc -d -M0 -Q1 ;;;RT audio I/O with MIDI in </CsOptions> <CsInstruments> sr = 44100 kr = 4410 ksmps = 10 nchnls = 2 ; Example by Giorgio Zucco 2007 kprogram init 0 instr 1 ;Triggered by MIDI notes on channel 1 ifund notnum ivel veloc idur = 1 ; Sends a MIDI program change message according to ; the triggering note's velocity outkpc 1 ,ivel ,0 ,127 noteondur 1 ,ifund ,ivel ,idur endin </CsInstruments> <CsScore> ; Dummy ftable f 0 60 </CsScore> </CsoundSynthesizer>
Here is another example of the outkpc opcode. It uses the file outkpc_flkt.csd.
Example 584. Example of the outkpc opcode using FLTK.
See the sections Real-time Audio and Command Line Flags for more information on using command line flags.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform ; Audio out Audio in No messages -odac -iadc -d -M0 -Q1;;;RT audio I/O with MIDI in </CsOptions> <CsInstruments> sr = 44100 kr = 4410 ksmps = 10 nchnls = 2 ; Example by Giorgio Zucco 2007 FLpanel "outkpc",200,100,90,90;start of container gkpg, gihandle FLcount "Midi-Program change",0,127,1,5,1,152,40,16,23,-1 FLpanelEnd FLrun instr 1 ktrig changed gkpg outkpc ktrig,gkpg,0,127 endin </CsInstruments> <CsScore> ; Run instrument 1 for 60 seconds i 1 0 60 </CsScore> </CsoundSynthesizer>