minimodem
codec2
Our great sponsors
minimodem | codec2 | |
---|---|---|
19 | 10 | |
820 | 122 | |
- | - | |
0.0 | 8.7 | |
10 days ago | 8 days ago | |
C | C | |
GNU General Public License v3.0 or later | GNU Lesser General Public License v3.0 only |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
minimodem
-
Replacement PCB Replicates Early 80s Modem
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/
V.21 modem implemented in Gnu Radio https://web.archive.org/web/20170627151353/http://aaronscher...
amodem - good source of ready made modulation implementations https://github.com/romanz/amodem
minimodem- simple radio link FSK modem https://github.com/kamalmostafa/minimodem
audsl - leased line project, not compatible with standard modems https://www.araneus.fi/audsl/ but might give some ideas.
-
Minimodem on Alpine Linux
Try downloading it from the tags section instead of cloning the repo. https://github.com/kamalmostafa/minimodem/tags
- PDF to audio raw and back to PDF
-
"Easy" Solution for free unlimited storage
there's a tool called minimodem http://www.whence.com/minimodem/ it uses audio cards to replicate ancient modem standards - I was watching videos of old modems and was able to use minimodem to simultaneously reconstruct the terminal session locally. It was amusing to do so.
- looking for cassette tape data storage
- Pimping my Casio with Oddly Specific Objects' alternate motherboard and firmware
-
Creating a Modem with HTML5 and the Web Audio API
“What do you do when you cannot copy text between computers due to lack of internet connectivity? “
Literally what Minimodem was created for :)
http://www.whence.com/minimodem/
- Minimodem – general-purpose software audio FSK modem
- minimodem - general-purpose software audio FSK modem
codec2
-
Flop rock: inside the underground floppy disk music scene
I'm currently working on a 2HD floppy disk release of a podcast episode which has taken me down an interesting rabbit hole of low-bitrate audio codecs, floppy disk aesthetics and label design.
The episode I'm releasing is 1h40m long, which sounds like it couldn't possibly fit in 1.44MB, but there's an obscure but free codec mostly used by digital HAM radio enthusiasts called Codec2 [1] which can encode human voice in as low as 700bit/s (roughly 315KB/hr). At that quality setting it sounds like complete garbage, although still barely intelligible, and there are no readily available media players for the it (there's not even an established file format) so I'm having to include complicated ffmpeg instructions in a README to get people to play it, but I think it all adds to the charm.
Funnily enough after searching for days for how to fit the original episode in a floppy (tried low-bitrate MP3, Opus and AAC, all of which fail at the task), and after discovering Codec2 almost by chance, I only then came across an article called "Codec2: a whole Podcast on a Floppy Disk" [2] which I probably would've found if I had started by searching "podcast in a floppy".
[1] https://github.com/drowe67/codec2
[2] https://auphonic.com/blog/2018/06/01/codec2-podcast-on-flopp...
-
Using AI to compress audio files for quick and easy sharing
1.5 kbps speech is impressive, I wonder how it compares with Codec2 https://github.com/drowe67/codec2
-
minimodem - general-purpose software audio FSK modem
David Rowe has some information on doing this kind of testing here: https://github.com/drowe67/codec2/blob/master/README_fsk.md
-
can Lora handle low quality voice?
You have a chance with codec2, but I wouldn't expect it to handle any real-time communication. This codec only works for voice, for anything else it's trash.
-
Low bandwidth mode for Signal?
You also got some samples available at http://www.rowetel.com/codec2.html
- How to convert audio to codec2?
- I created a floppy disk VCR that plays full length films (like garbage) with the help of a Pi and a custom x265 codec. I call it the LimaTek Diskmaster
What are some alternatives?
ggwave - Tiny data-over-sound library
SVT-AV1 - Welcome to the GitHub repo for the SVT-AV1! This repo is set to read-only for archiving purposes. Please join us at https://gitlab.com/AOMediaCodec/SVT-AV1. We look forward to seeing you there
quiet - Transmit data with sound. Includes binaries for soundcards and .wav files.
waifu2x - Image Super-Resolution for Anime-Style Art
quiet-js - Transmit data with sound using Web Audio -- Javascript binding for libquiet
lyra - A Very Low-Bitrate Codec for Speech Compression
syncthing-android - Wrapper of syncthing for Android.
jukebox - Code for the paper "Jukebox: A Generative Model for Music"
webjack - a JavaScript library that uses an audio software modem to communicate with an Arduino via a headphone jack
magic-wormhole - get things from one computer to another, safely
wormhole-william - End-to-end encrypted file transfer. A magic wormhole CLI and API in Go (golang).
quiet - A private, p2p alternative to Slack and Discord built on Tor & IPFS