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timeinstk

Read absolute time in k-rate cycles, since the start of aninstance of an instrument.

Called at both i-time as well as k-time. NB: the returned value at k-time starts at 1

Syntax

kres timeinstk

Performance

timeinstk is for time in k-rate cycles. So with:

  sr    = 44100
  kr    = 6300
  ksmps = 7

then after half a second, the timeinstk opcode would report 3150. It will always report an integer.

timeinstk produces a k-rate variable for output. There are no input parameters.

timeinstk is similar to timek except it returns the time since the start of this instance of the instrument.

Examples

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

Example of the timeinstk opcode.
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<CsoundSynthesizer>
<CsOptions>
; Select audio/midi flags here according to platform
; Audio out   Audio in
-odac           -iadc    ;;;RT audio I/O
; For Non-realtime ouput leave only the line below:
; -o timeinstk.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
  ; Print out the value from timeinstk every half-second.
  k1 timeinstk
  printks "k1 = %f samples\\n", 0.5, k1
endin


</CsInstruments>
<CsScore>

; Play Instrument #1 for two seconds.
i 1 0 2
e


</CsScore>
</CsoundSynthesizer>

Its output should include lines like this:

k1 = 1.000000 samples
k1 = 2205.000000 samples
k1 = 4410.000000 samples
k1 = 6615.000000 samples
k1 = 8820.000000 samples

See also

Time Reading

Credits

Author: Robin Whittle
Australia
May 1997

Example written by Kevin Conder.