noteondur — Sends a noteon and a noteoff MIDI message both with the same channel, number and velocity.
Sends a noteon and a noteoff MIDI message both with the same channel, number and velocity.
ichn -- MIDI channel number (1-16)
inum -- note number (0-127)
ivel -- velocity (0-127)
idur -- how long, in seconds, this note should last.
noteondur (i-rate note on with duration) sends a noteon and a noteoff MIDI message both with the same channel, number and velocity. Noteoff message is sent after idur seconds are elapsed by the time noteondur was active.
noteondur differs from noteondur2 in that noteondur truncates note duration when current instrument is deactivated by score or by real-time playing, while noteondur2 will extend performance time of current instrument until idur seconds have elapsed. In real-time playing, it is suggested to use noteondur also for undefined durations, giving a large idur value.
Any number of noteondur opcodes can appear in the same Csound instrument, allowing chords to be played by a single instrument.
Here is an example of the noteondur opcode. It uses the file noteondur.csd.
Example 659. Example of the noteondur opcode.
See the sections Real-time Audio and Command Line Flags for more information on using command line flags.
This example generates notes for every note received on the MIDI input. It generates MIDI notes on csound's MIDI output, so be sure to connect something.
<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 instr 1 ;Turned on by MIDI notes on channel 1 ifund notnum ivel veloc idur = 1 ;chord with single key noteondur 1, ifund, ivel, idur noteondur 1, ifund+3, ivel, idur noteondur 1, ifund+7, ivel, idur noteondur 1, ifund+9, ivel, idur endin </CsInstruments> <CsScore> ; Play Instrument #1 for 60 seconds. i1 0 60 </CsScore> </CsoundSynthesizer>