ihold — Creates a held note.
ihold -- this i-time statement causes a finite-duration note to become a “held” note. It thus has the same effect as a negative p3 ( see score i Statement), except that p3 here remains positive and the instrument reclassifies itself to being held indefinitely. The note can be turned off explicitly with turnoff, or its space taken over by another note of the same instrument number (i.e. it is tied into that note). Effective at i-time only; no-op during a reinit pass.
Here is an example of the ihold opcode. It uses the file ihold.csd.
Example 385. Example of the ihold opcode.
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 ;;;RT audio I/O ; For Non-realtime ouput leave only the line below: ; -o ihold.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> ; Initialize the global variables. sr = 44100 kr = 4410 ksmps = 10 nchnls = 1 ; Instrument #1. instr 1 ; A simple oscillator with its note held indefinitely. a1 oscil 10000, 440, 1 ihold ; If p4 equals 0, turn the note off. if (p4 == 0) kgoto offnow kgoto playit offnow: ; Turn the note off now. turnoff playit: ; Play the note. out a1 endin </CsInstruments> <CsScore> ; Table #1: an ordinary sine wave. f 1 0 32768 10 1 ; p4 = turn the note off (if it is equal to 0). ; Start playing Instrument #1. i 1 0 1 1 ; Turn Instrument #1 off after 3 seconds. i 1 3 1 0 e </CsScore> </CsoundSynthesizer>