minimodem

This will get you started: Tony Fisher wrote V.32 soft modem stack for SGI Indy back in 1996. York University couldnt handle hosting whole 8 megabytes of his stuff https://www.cs.york.ac.uk/news/fisher/home-page but at least they had the decency to upload it to github instead of just deleting https://github.com/university-of-york/cs-www-users-fisher/tr... Randy Rossi rewrote this project and got working V.21/23 https://github.com/randyrossi/fisher-modem Fabrice Bellard, because of course he did :), implemented his own version all the way to V.34 with parts of V.90 https://bellard.org/linmodem/ Currently actively maintained by Osmocom project https://osmocom.org/projects/linmodem "In Late 2021 we started a project to support AMR_Modem_Riser cards via a custom break-out board (#5294) and an associated FPGA softcore to interface the AC97 mas

A microphone and https://github.com/kamalmostafa/minimodem ?

Cool! I like minimodem: https://github.com/kamalmostafa/minimodem and heard from someone who compiled it on termux. Would love if ggwave allowed to chose encoding. It would be nice if ggwave made a apk available or published on f-droid.

I was thinking the same. Minimodem[1] turns devices into FSK communication devices. Analogous to transferring information via dial-up. [1] https://github.com/kamalmostafa/minimodem

Awesome project. I used a similar program (minimodem[1]) a while ago to configure Wi-Fi settings via audio [2]. It's great being able to do some basic setting without having a radio connection. Amazon used the same technique in their Dash-Button albeit in the inaudible range [3]. [1] https://github.com/kamalmostafa/minimodem [2] https://www.youtube.com/watch?v=DfSHclXjobY [3] http://www.blog.jay-greco.com/wp/?p=116

I've been working on open-source balloon control software [1] for my own balloon project that I've been building on/off for about six years. I am hoping to use a software modem to bridge between the RF and my AX.25 packet reader/writer [2] because I wanted to save weight. Payload weight is the name of the game in the balloon hobby--the lighter your payload, the less you have to inflate your balloon and the higher it will fly before it bursts. Even an ounce matters and the competitive altitude record balloons are invariably tiny, single-board, all-in-one payloads that are built around a single low-power microcontroller. There are a couple of good open source options for software-based AFSK APRS modem/TNCs: Dire Wolf: https://github.com/wb2osz/direwolf minimodem: https://github.com/kamalmostafa/minimodem You'll still need a USB sound ca