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Contents

• NAME
• SYNOPSIS
• DESCRIPTION
• INVOKING
  • Options
• SEE ALSO
• BUGS
• AUTHOR

NAME

       arecord,  aplay  -  command-line sound recorder and player
       for ALSA soundcard driver

SYNOPSIS

       [arecord | aplay ] [flags] filename

DESCRIPTION

       arecord is a command-line soundfile recorder for the  ALSA
       soundcard  driver.  It  supports  several file formats and
       multiple soundcards with multiple devices.

       aplay is much the same, only it plays instead  of  record­
       ing.  For  supported soundfile formats, the sampling rate,
       bit depth, and so forth can  be  automatically  determined
       from the soundfile header.

INVOKING

       [arecord | aplay ] [flags] filename


   Options
       -h, --help
              Help: show syntax.

       -V, --version
              Print current version.

       -l     List all available soundcards and devices.

       -c <card number>
              Select  the soundcard to use, if you have more than
              one. Cards are numbered from 0 (the default).

       -d <device number>
              Select the soundcard device to use,  if  your  card
              has more than one. Devices are numbered from 0 (the
              default). Not to be  confused  with  the  soundcard
              mixer  channels,  which are sometimes also referred
              to as "devices", just to be annoying.  Many  sound­
              cards  will  only  have device 0. Some more complex
              cards may have mor. Try using -l and see  what  you
              get.


       -q     Quiet mode. Suppress messages (not sound :))


       -w     Use Wave soundfile format (.wav)

       -r     Use  raw  soundfile format. Requires -s, -b, and -p
              flags?
       -u     Use Sparc Audio soundfile format (.au)

       -v     Use Voc soundfile format

       -S     Soundfile is stereo. Mono is the default for  head­
              erless files.

       -t <secs>
              Time limit for recording, in seconds.

       -s <Hz>
              Sampling rate in Hertz.

       -b <bits>
              Bit depth (8 or 16 bits).

       -m     Set  to  CD  standard  quality  (44100  Hz, stereo,
              16-bit linear).

       -M <bits>
              Set to DAT quality (48000 Hz, stereo,  16-bit  lin­
              ear).

       -p <type>
              Compression type (alaw, ulaw, adpcm).


   Example:
              aplay -c 2 -r -u -s 22050 -b 8 -p ulaw foobar

              will  play  the  raw  file  "foobar" as a 22050-Hz,
              mono, 8-bit, Mu-Law  .au  file,  using  the  second
              soundcard.

              arecord -t 10 -m -w foobar.wav

              will  record  foobar.wav as a 10-second, CD-quality
              wave file.

SEE ALSO

       alsamixer(1), amixer(1)

BUGS

       Note that .aiff files are not currently supported.

AUTHOR

       arecord and aplay are by Jaroslav  Kysela  <perex@suse.cz>
       This document is by Paul Winkler <zarmzarm@erols.com>.
                           25 Nov 1998                          3




                           25 Nov 1998                          3