NAME

       ebook2cw \- Convert ebooks to Morse code audio files (MP3/OGG)

SYNOPSIS

       ebook2cw [OPTIONS] [INFILE]

DESCRIPTION

       ebook2cw  ebook2cw  is  a  command line program which converts a plain text ebook to Morse
       code audio files. It works on several platforms, including Windows and Linux.

       A number of CW and audio parameters can be changed from their default values,  by  command
       line switches or a config file (see below). These are (default values in brackets):

       -w wpm - CW speed in words per minute [25]

       -e  wpm  -  Effective  CW  speed. If set, the spaces are sent at this speed instead of the
       character speed set by -w ("Farnsworth").

       -W x - Extra Word spacing. Similar to -e, but only affects the inter-word spacing, not the
       inter-character spacing.

       -f freq - audio frequency in Hz [600]

       -T SINE|0|SAWTOOTH|1|SQUARE|2 - set waveform to sine, sawtooth, squarewave. [sine]

       -Q  minutes  -  Increase  CW speed (QRQ) by 1 WpM in intervals of `minutes'. Speed will be
       reset to the initial value at the start of each chapter. [0]

       -n - Disables resetting the speed when using the -Q option.

       -p - Disables the paragraph separator (<BT>)

       -R risetime - risetime, in samples [50]

       -F falltime - falltime, samples [50]

       -O - Use OGG/Vorbis encoder instead of MP3 if compiled with OGG support

       -X - Do not encode, do not generate output files

       -s samplerate - samplerate for the OGG/MP3 file [11025]

       -b bitrate - MP3 bitrate, kbps [16]

       -q quality - MP3 quality, 1 (best) to 9 (worst). CW still sounds very good with the  worst
       quality, encoding time is greatly reduced. [5]

       -c chapter separator - Split chapters at this string. [CHAPTER]

       -d duration - Splits output files after "duration" seconds; finishes the current sentence.

       -l wordlimit - Splits output files after "wordlimit" words; finished the current sentence.

       -o  outfile-name  -  Output  filename  (chapter  number  and  .mp3/.ogg  will be appended)
       [Chapter]

       -a author - Author for the ID3 tag. Use quotes for strings with spaces (e.g. "JW Goethe")

       -t title - Title for the ID3 tag. Use quotes for strings with spaces (e.g. "Faust II")

       -k comment - Comment for the ID3 tag. Use quotes for strings with spaces.

       -y year - Year for the ID3 tag.

       -u - Switches input encoding format to UTF-8. Currently supported alphabets include Latin,
       Greek, Hebrew, Arabic and Cyrillic. Default is ISO 8859-1.

       -g file - Guesses the encoding of `file` (ISO 8859-1 / ASCII or UTF-8).

       -S  [ISO|UTF]  - Shows a table of all available morse symbols for the ISO 8859-1 and UTF-8
       character sets. Output in HTML format.

       -N snr - When this option is used, a noise background is added to  the  file  and  the  CW
       signal  is  scaled  down  to  achieve a SNR (Signal to Noise ratio) of "snr" dB.  Possible
       range of SNR: -10db to 10dB. Make sure to enclose the value in  quotation  marks  if  it's
       negative (i.e. -N "-3").

       -B  bandwidth  in Hz - Sets the filter bandwidth if the -N / SNR option is used. Available
       filters are 100Hz, 500Hz, 1kHz and 2.1kHz.

       -C frequency in Hz - Sets the center frequency of the filter if the -N  /  SNR  option  is
       used.  This  should  be  set  to  the frequency of the Morse signal; currently implemented
       center frequencies: 800Hz

TEXT COMMANDS

       CW prosigns can be generated by enclosing arbitrary letters in angle brackets (e.g.  <AR>,
       <SK>, ...).

       The  tone  frequency  (f), speed (w), effective speed (e), volume (v, 1..100) waveform (T)
       and SNR (N) can be changed arbitrarily within the text  by  inserting  commands,  starting
       with  a  pipe symbol, followed by the parameter to change and the value. Additionally, |Sn
       adds a period of n milliseconds silence to the file at the given position (0 < n < 10000).

       Example: |f400 changes the tone frequency to 400Hz, |w60 changes the speed to  60wpm,  |T3
       changes the waveform to squarewave.

CONFIG FILE AND CHARACTER MAPPINGS

       ebook2cw looks for a config file, ebook2cw.conf, in which all settings that can be changed
       by command line parameters can be set. Any  settings  made  in  the  config  file  can  be
       overridden by command line arguments.

       Additionally,  two `map` files can be set in the config file, for ISO8859-1 and UTF-8. You
       can map characters in those files to a string, which may be useful to  replace  characters
       like the exclamation mark (!) to a period (.), which is more common in CW.

       A  set  of  example  config  and  map  file  and  a  description  thereof  can be found at
       DESTDIR/share/doc/ebook2cw/examples/.

MISC

       ebook2cw can also be compiled to run as a CGI to serve MP3 and OGG files on  the  fly  for
       web applications.

AUTHOR

       Fabian Kurz, DJ1YFK <fabian@fkurz.net>

       https://fkurz.net/ham/ebook2cw.html

SEE ALSO

       morse(1)