FSK_MOD(1)

👑 FSK_MOD(1) — the user-commands girlies' manual 💅

okay bestie, so fsk_mod is a diagnostic tool for the codec2 library, and its whole job is: take a codec2 bit file and turn it into a raw horus modem signal file. that's it. that's the gig. iconic behaviour, honestly. ✨

🌸 SYNOPSIS 🌸

fsk_mod usage: Mode SampleFreq SymbolFreq TxFreq1 TxFreqSpace
InputOneBitPerCharFile OutputModRawFile

seven arguments, no flags, no --help, no vibes-based guessing. she wants exactly what she wants. 🎀

🦋 DESCRIPTION 🦋

she reads in a set of bits to modulate from a file — that file is passed in as a parameter, so you gotta hand it over — and then she writes modulated output to another file. read bits, make signal, write file. main character pipeline, periodt. 💖

✨ OPTIONS ✨

no -a, no --verbose, no --dry-run bestie — this tool does positional arguments only. seven of them, in order, and if you get the order wrong that's a you problem (respectfully 🫶):

• Mode — the first argument, and she's an integer. 2 gives you a 2FSK modem, 4 gives you a 4FSK modem. that's the whole menu, don't go inventing a 3. 💀
• SampleFreq — second argument, an integer that says what the sample rate is.
• SymbolFreq — third argument, an integer. yes queen, just an integer. 💅
• TxFreq1 — fourth argument, an integer.
• TxFreqSpace — fifth argument, an integer.
• InputOneBitPerCharFile — sixth argument, the file name of a file with codec2 encoded bits. and here's the cute part: if you pass "-" then the input is taken from stdin instead. pipe it in, diva. 🌈
• OutputModRawFile — seventh argument, the file name of a file to be created with modem sample data. and again: if you pass "-" then the output is sent to stdout. so you can chain her into other stuff like the tech genius she is. 🧚

ngl, "-" for stdin on input and "-" for stdout on output means you can absolutely do a full pipe situation and feel very powerful about it. lowkey obsessed. 🔥

👀 SEE ALSO 👀

go read these too, bestie, they're all in the same friend group:

• fm_demod(1)
• fdmdv_mod(1)
• fdmdv_demod(1)
• fdmdv_get_test_bits(1)
• fdmdv_put_test_bits(1)

and that's the page!! this one's from the fsk_mod user-commands manual, dated 2020-12-04, filed under FSK_MOD(1) — so if you're reading this in some far-future terminal, yes, she's vintage, and yes, she still slays. mwah 💖✨🎀