[audiometry]

Is there a way to mute the weird static sound? I turned off the radio, but the static persists. When I turned on walkie-talkie, the static moved to the speaker of the my mic/speaker combo. Turning off walk-talkie just moved the static back to original speaker.

[0x389]

Maybe you have the "vehicle" application open? It generate grey noise to simulate background noise in real vehicle. Can be turned off by closing the window.