audiorecord(1) - NetBSD Manual Pages

AUDIORECORD(1)              NetBSD Reference Manual             AUDIORECORD(1)


NAME

     audiorecord - record audio files


SYNOPSIS

     audiorecord [-afhV] [-b balance] [-C ctl] [-d device] [-e encoding] [-i
     info] [-m monvol] [-P precision] [-p input] [-s rate] [-t time] [-v
     volume] [files]


DESCRIPTION

     The audiorecord program copies the audio devices to the named audiofile,
     or the standard output if no file is named.  The output file will contain
     a Sun/NeXT audio header.


OPTIONS

     The following options are available:

     -a      Append to the specified file, rather than overwriting.

     -b      Set the balance to balance.  This value must be between 0 and 63.

     -C      Set the audio control device to be ctl.  The default is
             /dev/audioctl0.

     -d      Set the audio device to be device.  The default is /dev/audio0.

     -e      Set encoding to either ``alaw'', ``ulaw'' or ``linear''.  The de-
             fault encoding is ``ulaw''.

     -f      Force.  Normally when appending to audiofiles using the -a op-
             tion, the sample rates must match.  The -f option will allow a
             discrepancy to be ignored.

     -h      Print a help message.

     -i      If the audio device cannot be opened, exit now rather than wait
             for it.

     -m      Set the monitor volume.

     -P      Set the precision.  This value is the number of bits per sample,
             and is normally either ``8'' or ``16'', though the values ``24''
             and ``32'' are also valid.

     -p      Set the output port to port.  The valid values of port are
             ``speaker'', ``headphone'' and ``line''.

     -s      Set the sampling rate.  This value is per-second.  Typical values
             are 8000, 44100 and 48000, which are the telephone, CD Audio and
             DAT Audio default sampling rates.

     -t      Sets the maximum amount of time to record.  Format is [hh:]mm:ss.

     -q      Be quiet.

     -V      Be verbose.

     -v      Set the volume (gain) to volume.  This value must be between 0
             and 255.


ENVIRONMENT

     AUDIOCTLDEVICE  the audio control device to be used.

     AUDIODEVICE     the audio device to be used.


BUGS

     Many audio device hardware is limited in capabilities.  Any attempt to
     use an audio device beyond it's capabilities will result in an error.
     This program is not finished and will become much more versatile in it's
     understanding of the audio device and the desired output.


HISTORY

     The audiorecord program was first seen in SunOS 5.  The NetBSD au-
     diorecord was first made available in NetBSD 1.4.


AUTHOR

     The audiorecord program was written by Matthew R. Green <mrg@eter-
     na.com.au>.


SEE ALSO

     audioctl(1), audioplay(1), audioamd(4), aria(4), audio(4), eap(4),
     eso(4), ess(4), gus(4), guspnp(4), sb(4), sv(4), wss(4), ym.

NetBSD                          March 30, 1999                               2