But yes the old CRT whine I could definitely hear
But yes the old CRT whine I could definitely hear
If the signal is used sufficiently in advance (aka "indicating" your lane departure),
and you're not cutting things so close you need a blinker to fend off cars behind,
then there should be no problem turning it off once half of your vehicle is in the lane.
Some of the awful roars of noise I've heard while older people called me a weirdo. CRTs, early checkout scanners, some audio systems.
And back when "as seen on TV" electronic dog whistle trainers were all the rage? Torture.
Of course, these days people also regularly don't hear it since CRTs are nearly all gone.
The signal is at a frequency of one cycle per line-second, but there's an idle period while the beam goes back up to the top where it still cycles so the actual frequency will be a bit higher than a simple lines/frame * frames/sec calculation would indicate. Even for broadcast TV that was beyond what a lot of adults can hear (but a lot of kids can, as plenty of posters in this thread have said.) I want to say 15.7khz but I certainly won't swear to that. As your resolution goes up the frequency will go up so some people would be able to hear what resolution a monitor is set to.