Ask Lemmy
A Fediverse community for open-ended, thought provoking questions
Please don't post about US Politics. If you need to do this, try [email protected]
Rules: (interactive)
1) Be nice and; have fun
Doxxing, trolling, sealioning, racism, and toxicity are not welcomed in AskLemmy. Remember what your mother said: if you can't say something nice, don't say anything at all. In addition, the site-wide Lemmy.world terms of service also apply here. Please familiarize yourself with them
2) All posts must end with a '?'
This is sort of like Jeopardy. Please phrase all post titles in the form of a proper question ending with ?
3) No spam
Please do not flood the community with nonsense. Actual suspected spammers will be banned on site. No astroturfing.
4) NSFW is okay, within reason
Just remember to tag posts with either a content warning or a [NSFW] tag. Overtly sexual posts are not allowed, please direct them to either [email protected] or [email protected].
NSFW comments should be restricted to posts tagged [NSFW].
5) This is not a support community.
It is not a place for 'how do I?', type questions.
If you have any questions regarding the site itself or would like to report a community, please direct them to Lemmy.world Support or email [email protected]. For other questions check our partnered communities list, or use the search function.
Reminder: The terms of service apply here too.
Partnered Communities:
Logo design credit goes to: tubbadu
view the rest of the comments
Dial-up could still be pretty exciting. Or at least for me.
I am just amazed by data transfer via sound. When I found SSTV I was amazed by the ability to transfer analog images by sound. I was playing around with it for hours for months. I can get amazed by random crap like that. I can hear the image as it's being transferred. So cool!
But recently I was playing around with QSSTV and found HamDRM. Same thing, but digital. And it's not only for digital images, it can take any binary file. Sadly, no Android apps for HamDRM unlike analog SSTV. So, I just saved it as wav, moved it to my phone and played it to my laptop.
Holy shit! I transferred a 55kB document in 5 minutes using sound! It just feels so crazy and awesome. It sounds basically like random noise, static, but there's real data in it. If only there was an Android app to do this, I could play around it for hours transferring small data back and forth over the air, using sound waves!
But hey, I can even be excited by a large QR code. 2 seconds of 8kbps MP3 in a QR code, pretty cool!
Any websites or projects showing the 2 sec of audio in a QR code? Sounds cool!
Oh, I just simply used the data URI with base64-encoded MP3. It can be pasted directly into browser.
However, you could get far more with codec2, although it's very much a speech only codec. It goes as low as 700bps. So... roughly 20 - 25 seconds the same way, although you'd have to use the codec2 decoder instead of browser.
Sample: https://www.rowetel.com/downloads/codec2/hts2a_700c.wav
"These days a chicken is a rare dish"
Anyway, back to the MP3...
Just paste it into a browser.