I'm looking for some fundamentals on writing software decoders
for signals. I've found alot of things for windows (scancat,mmtty
etc) however not alot for linux. So since I use linux I'd like
to get a discussion going on writing some command line decoders
that will take the input from my soundcard and output the characters
for something like ACARS, TTY etc.

Any help would be great
TIA
der dogdog