this post was submitted on 23 Jan 2024
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When I read shit like this I realize I don’t know a damn thing about computers
Sending data over audio was how dial up Internet worked. My guess here is that the audio playing hardware loses the ability to come to a stopping point at the end of the audio file after a crash and starts playing the data in the memory after the audio file ends as if it were audio.
It might also be a debugging behavior built into the device
That's my guess as well.
The guy who uploaded the video that corporate content farm is "reporting" on actually covers exactly why this happens. In short, the gba plays sound from a certain part of ram, which a cpu interrupt continously refreshes. In the event of a crash, it keeps playing sound, but doesn't get the interrupt to keep it playing the proper data from ram. If you let it cycle through all of ram, it eventually leaks out and just starts playing, well, everything else, eventually getting to the game rom. Relevant Videos
Interesting. I'm check those out, thanks!
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Oh, that's not new tech.
Programs used to be on standard audio cassettes.
In fact, there were even radio shows that would broadcast games. Listeners could then record the audio onto a cassette and play it on their zx spectrum or commodore 64
https://en.m.wikipedia.org/wiki/Ventilator_202
What the fuck, see know nothing about computers, despite a career in IT and a homelab addiction
It's all data, whether that data is text, an image, audio, or a binary containing computer code.
Raw audio data is just a series of amplitudes. It has a bit depth (which says how many bits are in each amplitude sample) and a frequency (what is the change in time going from one amplitude to the next). Using those, you can convert it to an analog signal that can be played on a speaker. And if you use the same values to convert that signal back to digital, you end up with the same input signal (though with some random noise added and if you get unlucky and your sample phase lines up with the player's transition phase, you won't be able to extract the original signal, though it might sound similar). The multiple recordings help mitigate these issues.
Given that data format, any arbitrary file can be treated as raw sound that can be transmitted as analog audio.
The only real difference between this and other transfer methods we use to transfer files is that this involves a less reliable conversion from digital to analog back to digital because it wasn't designed to do that like USB, COM, wifi, etc connections are.