Laser-Based Audio Injection on Voice-Controllable Systems
I don't understand how laser light, even from a small 5 mW laser pointer, can get the membrane to move. My first thought was that it wasn't moving and that the signal was from the photoelectric effect, but they have a section in the paper testing just that and it turns out it is the membrane moving. I doubt it's expanding from heat since it's such a low power and it reacts fast enough to simulate speech, but how does it work?