event_i
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## event_i

event_i — Generates a score event from an instrument.

## Description

Generates a score event from an instrument.

## Syntax

    event_i "scorechar", iinsnum, idelay, idur, [, ip4] [, ip5] [, ...]

    event_i "scorechar", "insname", idelay, idur, [, ip4] [, ip5] [, ...]

## Initialization

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

“insname” -- A string (in double-quotes) representing a named instrument.

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

idelay -- When (in seconds) the event will occur from the current performance time. This corresponds to the second p-field, p2, in a score statement.

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

ip4, ip5, ... (optional) -- Parameters representing additional p-field in a score statement. It starts with the fourth p-field, p4.

## Performance

The event is added to the queue at initialisation time.

| Note
Note that the event_i opcode cannot accept string p-fields. If you need to pass strings when instantiating an instrument, use the scoreline or scoreline_i opcode.

## Examples

Here is an example of the event_i opcode. It uses the file event_i.csd.

Example 274. Example of the event_i 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
    -odac     ;;;RT audio out
    ;-iadc    ;;;uncomment -iadc if RT audio input is needed too
    ; For Non-realtime ouput leave only the line below:
    ; -o event_i.wav -W ;;; for file output any platform
    </CsOptions>
    <CsInstruments>

    sr = 44100
    ksmps = 32
    nchnls = 2
    0dbfs  = 1

    seed 0
    gisine ftgen 0, 0, 2^10, 10, 1

    instr 1 ;master instrument

    ininstr = 10 ;number of called instances
    indx = 0
    loop:
    ipan  random 0, 1
    ifreq random 100, 1000
    iamp  = 1/ininstr
    event_i "i", 10, 0, p3, iamp, ifreq, ipan
    loop_lt indx, 1, ininstr, loop

    endin

    instr 10

          print p4, p5, p6
    ipeak random 0, 1 ;where is the envelope peak
    asig  poscil3 p4, p5, gisine
    aenv  transeg 0, p3*ipeak, 6, 1, p3-p3*ipeak, -6, 0
    aL,aR pan2 asig*aenv, p6
          outs aL, aR

    endin

    </CsInstruments>
    <CsScore>
    i1 0 10
    i1 8 10
    i1 16 15
    e
    </CsScore>
    </CsoundSynthesizer>

## See also

Instrument Invocation

## Credits

Written by Istvan Varga.

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