Wait, so regular “lip reading” is looking at someone’s lips to determine what they’re saying.
Add “acoustic” and it involves sound. So… sound-based lip reading? Isn’t that just recording something with a microphone with the “lip reading” part being unnecessary?
Wait, so regular “lip reading” is looking at someone’s lips to determine what they’re saying.
Add “acoustic” and it involves sound. So… sound-based lip reading? Isn’t that just recording something with a microphone with the “lip reading” part being unnecessary?
Maybe they mean using laser to observe acoustics moving an object like a window?
What does that have to do with lips?
It’s metonymy, maybe?