4 ms·
I don't get it. How?
by middleclick 13y ago
I don't get it. How?
- JonnieCache 13y agoMaybe laser microphones aimed at the windscreens. Lots of ways.
- RBerenguel 13y agoIf the car motor is on while on the waiting line a laser microphone would probably just register a huge amount of noise
- JonnieCache 13y agoI bet you could remove it fairly easily. Use another laser to count the revs or something. Your brain does most of the work in removing noise from speech.
- enneff 13y agoOr just use two microphones—one aimed at the windshield and one at the bonnet—and subtract one from the other.
- RBerenguel 13y agoThen it turns into a significantly more complex problem. The thing with removing noise from speech is that the amount of vibration from the glass due to speech is negligible compared to the vibration due to the motor
- hamiltonkibbe 13y agoI don't think it's that straightforward, a few feet of difference in source position amounts to a phase shift of significant percentage of a wavelength at audio frequencies. You can't just flip phase and sum. It was also my understanding that laser microphones require very precise alignment, and getting one lined up normal to a convex, moving windshield is at least a tiny bit more than "trivial"
- nmcfarl 13y agoAt least at the Washington border, there are large signs telling you to turn off your engine while in line. Presumably this is for environmental reasons, but there maybe additional benefits.
- GigabyteCoin 13y agoFrom what I understand about speakers, a vibrating piece of glass would be an amazing one. Especially for sophisticated equipment.
- ams6110 13y agoStandard parabolic mic might be good enough.