It’s been driving me and my neighbors nuts for 3 or more hours and i can’t tell where it’s coming from.
by khiivl
It’s been driving me and my neighbors nuts for 3 or more hours and i can’t tell where it’s coming from.
by khiivl
2 comments
Spectrum analyzer says it’s 4.4KHz
Animal repellent devices. Formerly intended for martens, today they are often used against cats and dogs. Sometimes even officially used by local authorities to keep young people away from places, as old people often can no longer hear the high frequencies.