Replying to @ruemaleficent@kolektiva.social
@ruemaleficent People seem to rarely think of the experience of other people. I've got an area in the city (which I avoid) with a constant high pitch swoop swoop. Possibly one of those Pest deterrence tools. It's just at the end of my hearing range. Very few others seem to hear it, even fewer find the sound annoying.
Disclaimer: Please, don't use this as guide on how to be annoying to (some) autistic people.