event

event --  Generates a score event from an instrument.

Description

Generates a score event from an instrument.

Syntax

event iscorechar, kinsnum, kwhen, kdur, [, kp4] [, kp5] [, ...]

Initialization

iscorechar -- A string (in double-quotes) representing the first p-field in a score statement. This is usually "e", "f", or "i".

Performance

kinsnum -- The instrument to use for the event. This corresponds to the first p-field, p1, in a score statement.

kwhen -- When (in seconds) the event will occur. This corresponds to the second p-field, p2, in a score statement.

kdur -- How long (in seconds) the event will happen. This corresponds to the third p-field, p3, in a score statement.

kp4, kp5, ... (optional) -- Parameters representing additional p-field in a score statement. It starts with the fourth p-field, p4.

Examples

Here is an example of the event opcode. It uses the files event.orc and event.sco.

Example 1. Example of the event opcode.

/* event.orc */
/* Written by Kevin Conder */
; Initialize the global variables.
sr = 44100
kr = 4410
ksmps = 10
nchnls = 1

; Instrument #1 - an oscillator with a high note.
instr 1
  ; Create a trigger and set its initial value to 1.
  ktrigger init 1

  ; If the trigger is equal to 0, continue playing.
  ; If not, schedule another event.
  if (ktrigger == 0) goto contin
    ; kscoreop="i", an i-statement.
    ; kinsnum=2, play Instrument #2.
    ; kwhen=1, start at 1 second.
    ; kdur=0.5, play for a half-second.
    event "i", 2, 1, 0.5

    ; Make sure the event isn't triggered again.
    ktrigger = 0

contin:
  a1 oscils 10000, 440, 1
  out a1
endin

; Instrument #2 - an oscillator with a low note.
instr 2
  a1 oscils 10000, 220, 1
  out a1
endin
/* event.orc */
        
/* event.sco */
/* Written by Kevin Conder */
; Make sure the score plays for two seconds.
f 0 2

; Play Instrument #1 for a half-second.
i 1 0 0.5
e
/* event.sco */
        

Credits

Author: Kevin Conder

New in version 4.17

Thanks goes to Matt Ingalls for helping me fix my example.