you're being downvoted and I have no idea if it would actually be possible to be sensitive to wifi but I can hear my 2014 MacBook Pro process certain things and I don't mean the fan. No idea what triggers the processing "buzz" because it's not constant but certain cpu intensive operations make a buzz I can hear so I can certainly believe a similar buzz could come from a router's processor
That's called coil whine! It could happen in a router, but it seems unlikely in such a low power device.
I’ve used a 5-port ethernet switch (even lower power than a router) with very substantial coil whine. Like, “can’t tolerate it without headphones” substantial.
Tplink sg105e by any chance? I can hear mine from 3 meters away.
Just checked. That's exactly the one.
My graphics card had it terrible, well atleast until it died a two weeks ago. But it most often made the noise at an audible frequency during low power usage. When it got hit hard it stopped being a problem, but it could have just been pushing it outside of my audible range.