sndinfo — Displays information about a soundfile.


Get basic information about one or more soundfiles.


csound -U sndinfo [options] soundfilenames ...
sndinfo [options] soundfilenames ...


sndinfo will attempt to find each named file, open it for reading, read in the soundfile header, then print a report on the basic information it finds. The order of search across soundfile directories is as described above. If the file is of type AIFF, some further details are listed first.

There are two option types:

  1. -i or -i1 will print instrument information, which includes looping. The option continues until a -i0 option.

  2. The other option is -b which prints the broadcast information for WAV files. It can similarly be negated with -b0.


csound -U sndinfo test Bosendorfer/"BOSEN mf A0 st" foo foo2

where the environment variables SFDIR = /u/bv/sound, and SSDIR = /so/bv/Samples, might produce the following:

util  SNDINFO:      
           srate 22050, monaural, 16 bit shorts, 1.10 seconds
           headersiz 1024, datasiz 48500  (24250 sample frames)
    /so/bv/Samples/Bosendorfer/BOSEN mf A0 st:  AIFF, 197586 stereo samples, base Frq 261.6 (MIDI 60), sustnLp: mode 1, 121642 to 197454, relesLp: mode 0
     AIFF soundfile, looping with modes 1, 0
     srate 44100, stereo, 16 bit shorts, 4.48 seconds
     headersiz  402, datasiz 790344  (197586 sample frames)
           no recognizable soundfile header
            couldn't find

Here is an example of the sndinfo utility. It uses the file sndinfo.csd.

Example 1357. Example of the sndinfo utility.

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
; For Non-realtime ouput leave only the line below:
; -o sndinfo.wav -W ;;; for file output any platform

sr = 48000  ; sample rate of beats.wav = 44100
ksmps = 32  ; and will be resampled to 48000
nchnls = 2
0dbfs  = 1

; by Menno Knevel 2021

; resample in the highest qualty, name the new sample 'beats48.wav'
gires system_i 1,{{ src_conv -r48000 -Q5 beats.wav -o beats48.wav }}

instr 1
ires system_i 1,{{ sndinfo -i beats48.wav }} ; check sample rate
aout    diskin2 "beats48.wav", 1
outs    aout, aout  

i1 0 2