quiet-lwip
Languages and libraries
networking library
SHOW HN2016
186points
77comments
#149of 2,264 in 2016
Top 7%of 2016 by points
How HN took it
CuriousMostly questions and neutral comments
3 positive, 11 neutral or asking, 0 mixed, 3 critical, out of 17 comments about the project. Thread score -0.06.
Idea: 2 for, 0 againstPerformance: 0 for, 1 againstDesign: 0 for, 1 againstPrivacy: 1 for, 0 against
The thread, comment by comment
Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.
positive neutral or mixed critical about another commenter or something else the maker
What HN said
What people liked
Clever and cool idea.
From 2 comments
This is exceedingly cool. If someone wants to play with lower bandwidth data (text, basic file transfer) over sound, it's a pretty active area in the world of amateur radio. You…
ytjohn on HNGMSK [1] among others. Pretty cool! [1] https://en.wikipedia.org/wiki/Minimum-shift_keying#Gaussian_minimum-shift_keying
wyldfire on HN
Objections
Ultrasonic tones could bother pets.
From 1 comment
Someone's dog is going to hate this.
netsin on HN
Sound-based transfer is unreliable and slow compared with real modems.
From 2 comments
GSM is definitely possible, but you'd struggle to get more than 2kbit/second (and that'd be over a good connection). You'd probably need FEC to pull it off.
jleahy on HNBaseline (most robust, up to 10 m range) configuration is 562.5 bps. Tops out at 3 Kbps under ideal conditions (maybe 30 cm range).
piannucci on HN
Requests
Demo video.
From 1 comment
I wish there was a youtube link that demo'ed this here :)
0x0 on HN
Questions
Why not implement a traditional modem with SLIP or PPP?
From 1 comment
Clever, an audio soft-modem. Was there a reason to not implement this as an actual modem with a frequency band assigned to either channel and then to run SLIP or PPP over it?
jacquesm on HN
Throughput of the modem?
From 1 comment
Interesting, I had looked around for similar libraries when I started but didn't find many. It looks like ours differ in terms of FEC and configurability. What throughput does…
brian-armstrong on HN
Alternatives named
fldigi amateur radio software
From 1 comment
This is exceedingly cool. If someone wants to play with lower bandwidth data (text, basic file transfer) over sound, it's a pretty active area in the world of amateur radio. You…
ytjohn on HN
quiet-js
From 1 comment
You may be interested in https://github.com/quiet/quiet-js and https://danielrapp.github.io/spectroface/, both encode text / images over audible frequencies, but of course they…
JorgeGT on HN
Chirp audio data transfer
From 1 comment
Yup, a company I co-founded http://chirp.io has been using this technique (well, MFSK) to share data over the air, between mobile and embedded devices for a while now. Easy to…
goodmachine on HN
Sonicnet.js
From 1 comment
Not sure if this is what you meant, but Chromecast's guest mode will pair using ultrasound. The guy who worked on it has some code using the WebAudio API on github and his linked…
niftich on HN