Description

Returns the length of a sound file.

Syntax

ir filelen ifilcod

Initialization

ifilcod -- sound file to be queried

Performance

filelen returns the length of the sound file ifilcod in seconds.

Examples

Here is an example of the filelen opcode. It uses the files filelen.orc, filelen.sco, and mary.wav.

/* filelen.orc */
; Initialize the global variables.
sr = 44100
kr = 4410
ksmps = 10
nchnls = 1

; Instrument #1.
instr 1
  ; Print out the length of the audio file 
  ; "mary.wav" in seconds. 
  ilen  filelen "mary.wav"
  print ilen
endin
/* filelen.orc */

        

/* filelen.sco */
; Play Instrument #1 for 1 second.
i 1 0 1
e
/* filelen.sco */

        

The audio file “mary.wav” is 3.5 seconds long. So filelen's output should include a line like this:

instr 1:  ilen = 3.501
      

See Also

filenchnls, filepeak, filesr

Credits

Example written by Kevin Conder.

New in Csound version 3.57