WF2WAV
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WF2WAV
Section: User Commands (1)
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NAME
wf2wav, wf2mp3, wf2dsp - convert runfile waveform into WAVE or MP3 file or sound output
SYNOPSIS
wf2wav
[-V]
[-v volume]
[-r rate]
[-t st,en]
runname.wnn
[sox-options]
[outfile]
wf2mp3
[-V]
[-v volume]
[-t st,en]
runname.wnn
[sox-options]
[outfile]
wf2dsp
[-V]
[-v volume]
[-t st,en]
runname.wnn
[sox-options]
DESCRIPTION
Wf2wav
converts a
runfile's
waveform file
(.wnn)
into a RIFF WAVE
(.wav)
file.
Wf2mp3
converts a
runfile's
waveform file
into an MPEG layer 3
(.mp3)
file.
Wf2dsp
outputs a waveform file to the Linux DSP sound output device.
For a given
runname.wnn
file, wf2wav, wf2mp3 or wf2dsp reads the runname.frm file to get the sampling
rate and waveform's rate divisor, from which it calculates the effective
sampling rate for the waveform file.
It them makes use of the
sox(1)
(Sound eXchange) program on Linux to do the conversion to an audio file,
and in the case of wf2mp3, it uses the
lame
encoder to convert it to MP3.
In the case of wf2dsp, it outputs the sound directly to Linux's /dev/dsp device.
Options
- -V
-
Sets the verbose output option for sox, as well as generating some verbose
output from the conversion script itself.
This includes showing what sox options are used to convert the file.
- -v volume
-
Sets the output gain factor for the signal volume.
The default is
auto,
which will cause the waveform to be analysed to determine the best gain
factor to maximise signal strength without clipping.
- -r rate
-
Sets the output sample rate in Hertz.
The default output rate is 11025 Hz.
This option only applies to
wf2wav.
For
wf2mp3,
the output rate is fixed at 16 KHz/24 kbps for the resulting MP3 file.
For
wf2dsp,
the output rate is set to the waveform's own sampling rate, or upsampled
to 4 KHz for waveforms of lower frequencies.
- -t st,en
-
Specifies the start time and end time in seconds.
The start and end must be specified as a single argument with a comma
in between, i.e. with no space or by putting the whole argument in quotes.
Note that unit specifiers are not allowed after the two numbers, which must
be specified in seconds, but can include decimal points to specify fractions
of seconds.
The default action is to convert the whole waveform.
If no
sox-options or outfile
is specified, the default is to output a .wav (or .mp3) file on the
standard output.
If an
outfile
is specified, it must have the correct file name extension (.wav or .mp3).
For wf2dsp, no outfile can be specified as only /dev/dsp is used.
- --help
-
Causes the program to output a summary of command usage and options.
SEE ALSO
sox(1), frmfile(5)
http://lame.sourceforge.net/
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- Options
-
- SEE ALSO
-
This document was created by
man2html,
using the manual pages.
Time: 17:58:07 GMT, February 20, 2019
Copyright © G. R. Detillieux,
Spinal Cord Research Centre,
The University of Manitoba.