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AUDIOCAT(1)    Audiocat[tm] 1.2: Man Page Version 3   AUDIOCAT(1)



NAME
       audiocat - OSS playback/recording program

SYNOPSIS
       audiocat  [  -r  N ]  [  -b  (1|2) ]  [  -f N ] [ -t N ] [
       -lsgmap1idh ] audiofile..


DESCRIPTION
       audiocat plays and records audio  files  through  the  OSS
       audio  drivers.   audiocat  has  been built on a couple of
       Linux systems and seems to work  once  the  drivers  them­
       selves  work.  audiocat has been a useful tool in confirm­
       ing the functionality of audio subsystems.

       Used to play back audio, audiocat ensures that  the  sound
       card  and  speakers  are  working,  connected, and set up.
       Used to record audio, audiocat can ensure that the record­
       ing  levels  are  set  reasonably  along with the machine-
       dependent byte ordering of audio data, either  by  playing
       back the recorded audio again with audiocat, or by doing a
       signal levels analysis with the audiostats program.


OPTIONS
       -r N Sample rate is N samples per second [default: 16000]

       -b (1|2) One or two bytes (8 or 16 bits)  per  sample  per
       channel (default: 2)

       -f  N  Seek to N samples From the beginning of file before
       starting playback (default: 0)

       -t N Play only up To N samples. (default: end of file)

       -l Linear (PCM) sample scaling (this is the default)

       -s Swap bytes (this only makes sense if  -b  2  is  speci­
       fied).

       -g  Use automatic gain control (via /dev/mixer), if avail­
       able.

       -m Mu-law sample scaling (assumes -b 1)

       -a Output to /dev/audio

       -p Output to /dev/dsp

       -1 Output to /dev/dsp1

       -i Input.  Record a single input file.  Hit  control-C  to
       end recording.

       -d Print verbose debugging output

       -h Print Help information

       audiofile  ..   [required]   This  audio  file  (or files)
       should be a raw, headerless, audio data file at the speci­
       fied  sample  rate,  size,  and  format.  If -i (input) is
       specified, create the (single) named new file  and  record
       into  it.   Otherwise,  play  back the (one or more) named
       files.


EXAMPLES
       To get a list of options and  their  explanation,  use  no
       options or -h:

              example% audiocat


       To   play   back  16000Hz  16-bit  linear  PCM  data  from
       datafile.sw through /dev/audio


              example% audiocat datafile.sw


       To record 8000Hz mulaw from /dev/dsp1 into datafile.ul


              example% audiocat -i -r 8000 -b 1 -m datafile.ul


       To play back 22050Hz 16-bit linear PCM data from  file1.sw
       and file2.sw through /dev/dsp1, after byte swapping.


              example%   audiocat  -r  22050  -l  -b  2  file1.sw
              file2.sw


       To play back just samples 1000 through 2000 in file1.sw:


              example% audiocat -f 1000 -t 2000 file1.sw



SEE ALSO
       audiostats(1)


BUGS
       None known.  Please report bugs to tv@sprex.com Your feed­
       back on this document is solicited.


AUTHOR
       Tom Veatch, Sprex, Inc.  All rights reserved.  audiocat is
       licensed software, to be used only under a license  agree­
       ment with Sprex.



Product of Sprex, Inc.      30 June 2003              AUDIOCAT(1)

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