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AUDIORECORD(1)              General Commands Manual             AUDIORECORD(1)

     audiorecord - record audio files

     audiorecord [-afhqV] [-B buffersize] [-b balance] [-c channels]
                 [-d device] [-e encoding] [-F format] [-i info] [-m monvol]
                 [-P precision] [-p port] [-s rate] [-t time] [-v volume] file

     The audiorecord program copies the audio device to the named audiofile
     or, if the file name is -, to the standard output.

     The output file will contain either a Sun/NeXT audio header, a RIFF/WAVE
     audio header or no header at all.  Sun output files using a linear PCM
     encoding are written with big-endian signed samples, possibly after
     converting these from little-endian or unsigned samples.  RIFF/WAVE files
     are written in little-endian, signed samples, also converting if
     necessary.  The default output is Sun/NeXT format, but if the output file
     file ends with a .wav file extension it will be written as RIFF/WAVE.

     The following options are available:

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

     -B buffersize  Set the audio device read buffer size to buffersize.  The
                    default value is the record.buffer_size of the audio

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

     -c channels    Set number of channels to channels.

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

     -e encoding    Set encoding to either "alaw", "ulaw", or "linear", or any
                    other value reported by audioctl encodings.  The default
                    encoding is "ulaw".  If the output format is "sun", the
                    file will contain slinear_be samples, if it is "wav", then
                    slinear_le, independent of the argument to -e.  Setting
                    the argument to -e still may be important since it is used
                    in an ioctl(2) call to the kernel to choose the kind of
                    data provided.

     -F format      Set the output header format to format.  Currently
                    supported formats are "sun", "wav", and "none" for
                    Sun/NeXT audio, WAV, and no header, respectively.

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

     -h             Print a help message.

     -i info        If supported by the -F format, add the string info to the
                    output header.

     -m monvol      Set the monitor volume.

     -P precision   Set the precision.  This value is the number of bits per
                    sample, and is normally either "8" or "16", though the
                    values "4", "24", and "32" are also valid.

     -p port        Set the input port to port.  The valid values of port are
                    "cd", "internal-cd", "mic", and "line".

     -q             Be quiet.

     -s rate        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 time        Sets the maximum amount of time to record.  Format is

     -V             Be verbose.

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

     AUDIOCTLDEVICE  the audio control device to be used.

     AUDIODEVICE     the audio device to be used.

     Record CD quality audio to a WAVE file:
           audiorecord -c 2 -e slinear_le -P 16 -s 44100 recording.wav

     audioctl(1), audioplay(1), aria(4), audio(4), auich(4), autri(4),
     auvia(4), clcs(4), clct(4), cmpci(4), eap(4), emuxki(4), esm(4), eso(4),
     ess(4), fms(4), gus(4), guspnp(4), neo(4), sb(4), sparc/audioamd(4),
     sv(4), wss(4), yds(4), ym(4)

     The audiorecord program was first seen in SunOS 5.  It was first made
     available in NetBSD 1.4.  RIFF/WAVE support, and support for converting
     signed/unsigned and big/little-endian samples was first made available in
     NetBSD 1.6.

     The audiorecord program was written by Matthew R. Green

     WAV big-endian samples are converted to little-endian, rather than a RIFX
     header being written.

NetBSD 10.99                    March 25, 2021                    NetBSD 10.99