[dylan604]

> Having plugged audio directly into an oscilloscope

i'd suggest you do it again before making baseless accusations. they provide you the ability to download the audio. they even provide a bit of software to drive lasers with the data.

[dylan604]

as a follow up to my own post. I couldn't remember the video, but the YT algo found it for me[0]. Smarter Every Day did a video with the same people from TFA that shows exactly how they do these. I can't find any better evidence to show your "thoughts" being totally baseless.

I hate double replying, but I was busy

[0]https://www.youtube.com/watch?v=4gibcRfp4zA