Codegroup Message Input & Output

Initially Codegroup should allow for interactive text only.

Codegroup should support binary file input by version 0.51b.

Initial standardization of headers and footers should be done by version 0.7b.

Text : UPPER CASE ONLY, with NUMBERS in HEADER and FOOTER

Evolutionary timeline for CODEGROUP

Late-BETA

v0.80 The Morse Code audio file subsystem should be based on the one found in : http://www.winmorse.com/

Morse Code audio files with adjustable
-- Frequency
-- Speed
-- Mode (Standard or ARRL Farnsworth)
-- Volume 20% ... 80%
-- Filter 500 Hz & 1000 Hz
-- Optimal settings for 800hz or 1000hz output at 10% original speed should come with verstion 0.85

v0.90 -- https://en.wikipedia.org/wiki/Bell_103_modem

v0.95 -- https://en.wikipedia.org/wiki/Bell_202_modem

Non-BETA

ADD CRYPTO SUPPORT FOR COMMERCIAL ENIGMA

v0.99 -- http://www.cryptomuseum.com/crypto/enigma/c/index.htm

v1.00 -- https://en.wikipedia.org/wiki/SITOR (Broadcast Mode; 20 second tuning signal)

v1.10 -- https://en.wikipedia.org/wiki/MT63 (1k, 2k; Long Interleave only; 30 second tuning signal)

The audio file output formats should be

-- WAV & AU : 8 bits, mu-Law & A-Law & uncompressed
-- WAV & AU : Force 8k samples per second mode, MONO.
-- MP3, 16 bits (can be delayed until version 3, WAV file must be intermediate)
-- AAC, 16 bits (can be delayed until version 3, WAV file must be intermediate)

Version 2

ADD Optar (Note : Rendering code will have to be translated from C++ to Java.)

2.1 -- http://ronja.twibright.com/optar/ ( SEE : https://github.com/colindean/optar )

ADD LOW COMPLEXITY NMEA ENCODER-DECODER

2.5 -- http://www.cryptomuseum.com/crypto/nema/index.htm

Version 3

The audio file output formats should be

-- MP3, 16 bits (uncompressed WAV file must be intermediate)
-- AAC, 16 bits (uncompressed WAV file must be intermediate)
-- Mono encoding, but create new 16k mono uncompressed intermediate WAV file mode.