printk — Prints one k-rate value at specified intervals.


Prints one k-rate value at specified intervals.


printk itime, kval [, ispace]


itime -- time in seconds between printings.

ispace (optional, default=0) -- number of spaces to insert before printing. (default: 0, max: 130)


kval -- The k-rate values to be printed.

printk prints one k-rate value on every k-cycle, every second or at intervals specified. First the instrument number is printed, then the absolute time in seconds, then a specified number of spaces, then the kval value. The variable number of spaces enables different values to be spaced out across the screen - so they are easier to view.

This opcode can be run on every k-cycle it is run in the instrument. To every accomplish this, set itime to 0.

When itime is not 0, the opcode print on the first k-cycle it is called, and subsequently when every itime period has elapsed. The time cycles start from the time the opcode is initialized - typically the initialization of the instrument.


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

Example 632. Example of the printk opcode.

See the sections Real-time Audio and Command Line Flags for more information on using command line flags.

; 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 printk.wav -W ;;; for file output any platform

; Initialize the global variables.
sr = 44100
kr = 44100
ksmps = 1
nchnls = 1

; Instrument #1.
instr 1
  ; Change a value linearly from 0 to 100,
  ; over the period defined by p3.
  kval line 0, p3, 100

  ; Print the value of kval, once per second.
  printk 1, kval


; Play Instrument #1 for 5 seconds.
i 1 0 5


Its output should include lines like this:

 i   1 time     0.00002:     0.00000
 i   1 time     1.00002:    20.01084
 i   1 time     2.00002:    40.02999
 i   1 time     3.00002:    60.04914
 i   1 time     4.00002:    79.93327

See Also

printk2 and printks


Author: Robin Whittle
May 1997

Example written by Kevin Conder.

Thanks goes to Luis Jure for pointing out a mistake with the itime parameter.