na_record — record waveform from audio device

       The -time argument only accepts integer values (though the usage message implies otherwise)

na_record  records digital audio data from the system's audio input device and writes it to the specified
       file.  It supports a variety of output file formats and native audio devices.

       The following option flags are recognized:

             -h    Prints a short summary of usage to standard output.
             -fsamplingrate
                   Sets the input sampling rate (in samples per second, i.e. Hz).  Not all devices  support  all
                   sampling rates, so it may be desirable to set this separately from the output sampling rate.
             -audiodevicedevice
                   Sets  the  audio  device  to  record  from,  if  supported by the audio protocol chosen (e.g.
                   /dev/dsp, /dev/audio)
             -timeseconds
                   Stops recording after the specified number of seconds.
             -ofile
                   Writes sound output to the specified file
             -otypetype
                   Specifies the file format to use for output. Supported types  currently  include  nist,  est,
                   dsps,  snd, riff, aiff, audlab, raw, and ascii. The -h flag will show the most accurate list.
                   The default type is nist.
             -Fsamplingrate
                   Sets the output sampling rate (again, in samples per second, i.e. Hz). If this  differs  from
                   the input sampling rate, resampling will be done. Defaults to 16000Hz.
             -obobyteorder
                   Sets the output byte order. Supported values are MSB, LSB, and native. Many file formats have
                   their own byte order, or are byte order independent, so this isn't tremendously useful except
                   for raw data. The default is the native byte order for the system audio device.
             -oswap
                   Swap bytes when saving to output.
             -ostypesampletype
                   Sets the sample type of the output. Supported values are short, mulaw, byte, or ascii. Again,
                   this is usually implied by the file format, so should only be used for raw data.  The default
                   is short (i.e. 16-bit PCM).
             -paudiodeviceprotocol
                   Selects  an  audio  device  protocol (i.e. type of audio device) to use.  This varies between
                   different installations of Speech Tools, but defaults to  the  most  'native'  audio  device,
                   usually Open Sound System on Linux and *BSD and /dev/audio on Solaris.

             NA_PLAY_PROTOCOL
                   Audio protocol to use (as in the -p flag)
             NA_PLAY_HOST
                   Host to record audio from when using a network audio protocol.

       To record five seconds of audio from /dev/dsp1 (on Linux) to foo.wav in RIFF format at 32kHz:
             $na_record-time5-audiodevice/dev/dsp1-ofoo.wav-otypeRIFF-f32000
       To record one second of audio to bar.wav in raw format in 8kHz mu-law:
             $na_record-time1-obar.wav-otyperaw-ostypemulaw-f8000

       na_record — record waveform from audio device

na_play(1)

Edinburgh Speech Tools                            April 4, 2001                                     NA_RECORD(1)

na_record  [-h]  [-fsamplingrate]  [-audiodevicedevice]  [-timeseconds]  [-ofile] [-otypetype]
                 [-ostypesampletype]   [-Fsamplerate]   [-oboMSB   |   LSB   |   native]   [-oswap]
                 [-paudiodeviceprotocol]