Can light and sound interfere with wifi signals?

No.

>>9070932
air is pretty much lossless and transparent to wifi, so sound doesn't really fuck with it. if it wasn't so transparent, conceivably sound could set up standing waves which light could refract off.

wifi devices may use Surface Acoustic Wave SAW devices, but the wavelengths would be incredibly short in a solid caused by high frequency deformations induced by rapidly changing electric fields. Moreover, the impedance mismatch between air and solids is very bad, so very little external sound energy can be transfered to the SAW.

visible light is an electromagnetic phenomenon like wifi. visible light has wavelengths on the order of hundreds of nanometers, while wifi has wavelengths on the order of 10s of centimeters. Because the wavelengths are so different, and because neither band really interacts much with air, they don't really interact with each other.

TL;DR no

>>9071002
Thank you. I liked your answer much more than >>9070995

>>9071002
But what about interference with other wifi or radio signals? Isn't there a theoretical limit on how much effective wifi you can have in a given volume?

>>9071370
>But what about interference with other wifi or radio signals?
you use some form of multiplexing modulation strategy to prevent this. their are dozens of techniques, the two you are most familiar with are AM and FM.

>>9070932
Yes provided that the sound is loud enough or that the light is bright enougj

>>9071676
>you use some form of multiplexing modulation strategy to prevent this. their are dozens of techniques, the two you are most familiar with are AM and FM.
No.
Modulation isn't a method to avoid interference.