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Silly question: isn't this phenomenon bound by the Nyquist limit, which means it would take at the very least 4k fps to reconstruct music (considering that a soprano can get no higher than 2 kHz)? That sounds like an impossibly high framerate.
Silly question: isn't this phenomenon bound by the Nyquist limit, which means it would take at the very least 4k fps to reconstruct music (considering that a soprano can get no higher than 2 kHz)? That sounds like an impossibly high framerate.
Here is the project page from 2014: http://people.csail.mit.edu/mrub/VisualMic/ And previous discussion: https://news.ycombinator.com/item?id=8131785 https://news.ycombinator.com/item?id=9254654
Isn't this how those laser microphones work?
It would be interesting to compare the two methods in various scenarios, i.e. through glass.
Obviously the laser method will work at night while the video method will not (probably depends how "dark" it is).
I wonder how long it'll be until this technique becomes feasible for recording professionally? Like, instead of capsules and diaphragms, we just have a laser that gets the cleanest, clearest possible signal it can, from the room around you ..
Disclaimer: I work for a professional microphone manufacturer. I wonder how long it'll be until this technique becomes feasible for recording professionally? Like, instead of capsules and diaphragms, we just have a laser that gets the cleanest, clearest possible signal it can, from the room around you ..