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trighold

Timed trigger, holds a value for a given time.

Plugin opcode in scugens.

Port of Supercollider's Trig ugen. When a nonpositive to positive transition occurs at the input, trighold outputs the level of the triggering input for the specified duration, otherwise it outputs zero.

Syntax

aout = trighold(ain, kdur)
kout = trighold(kin, kdur)

aout trighold ain, kdur
kout trighold kin, kdur

Initialization

initialvalue If given, sets the internal state. Default=0

Performance

ain -- Trigger. Trigger can be any signal. A trigger happens when the signal changes from non-positive to positive.

kdur -- Duration of the trigger in seconds.

Examples

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

Example of the trighold opcode.
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<CsoundSynthesizer>
<CsOptions>
</CsOptions>
<CsInstruments>

sr = 44100
ksmps = 128
nchnls = 2
0dbfs = 1.0

instr 1
  km = metro(1)
  kt timeinsts
  ktrig = trighold(km, 0.5)
  printks "t=%f  km=%f    ktrig=%f\n", 0.01, kt, km, ktrig
endin

instr 2
  am = upsamp(metro(1))
  aenv = trighold(am, 0.5)
  asig pinker
  outch 1, asig*aenv
  outch 2, asig
endin

</CsInstruments>
<CsScore>
i 1 0 10
i 2 0 10

</CsScore>
</CsoundSynthesizer>

See also

Sensing and Control: Tempo and Sequencing

Credits

By: Eduardo Moguillansky 2017