Oh no, who could have possibly foreseen that this was their endgame?
this post was submitted on 06 Oct 2025
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Flood them with signal so that it's all noise
Does this mean the people playing their crappy music at full blast on speakers as they walk are now providing a public service?
No one could've ever seen this coming...
Here’s a fun trick: If you have N microphones on an area you can filter the audio to N -1 voices using just linear algebra, no AI.
It’s a very cool trick.
Now imagine what happens when you add AI and blanket an area.
Wait, how? Got a link pls?
I had to do a bit of research to remind myself. We did this in university as an exercise, so it was a while ago.
Basically with N signals (speakers) and M mixes (microphones). When M > N then you can create an MxN matrix and solve it numerically, and we were able to do that pretty easily. We also did the case where M=N as a demo and we used ICA for that with either projection pursuit or SVD, I can't remember.
You can read more about this on Wikipedia:
- Blind Source Separation
- Independent Component Analysis
- The exercise we did was a lot like this tutorial https://arxiv.org/pdf/1404.2986
With modern models this would be even easier with fewer microphones, and there's been a lot of time and money between when these methods were devised and now.
My bet is on some Fourier transform fuckery
ELI5 please?
I want a "target pressure wave attack" necklace