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NetBSD 6.1.5 - man page for audiorecord (netbsd section 1)

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AUDIORECORD(1)			   BSD General Commands Manual			   AUDIORECORD(1)

NAME
     audiorecord -- record audio files

SYNOPSIS
     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

DESCRIPTION
     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.

OPTIONS
     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 device.

     -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 /dev/sound.

     -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 nor-
		    mally 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 [hh:]mm:ss[.dddddd].

     -V 	    Be verbose.

     -v volume	    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.

SEE ALSO
     audioctl(1), audioplay(1), aria(4), audio(4), audioamd(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), sv(4), wss(4), yds(4), ym(4)

HISTORY
     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.

AUTHORS
     The audiorecord program was written by Matthew R. Green <mrg@eterna.com.au>.

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

BSD					December 30, 2010				      BSD
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