I find it very annoying if appliances (or anything) emit high pitched noises. Mostly, this is just ignorant engineering (e.g. whining coils) and it often slips

I find it very annoying if appliances (or anything) emit high pitched noises. Mostly, this is just ignorant engineering (e.g. whining coils) and it often slips under the radar, because older people cannot hear those. This makes it also rather hard to return these for some people hardly usable devices. Usually it is hard to hear those sounds in a busy shop and the people checking are often older, more experienced managers who cannot hear these frequencies any more. It should be much easier to measure these noises even using e.g. a smartphone or you know, bringing your kids to work sometime to listen to the new model of a device in operation or just powered on. It is not rocket science. Actually, I own a smartphone that emits high pitched noises e.g. when calling, I cannot grok, how anybody can engineer such junk. I thought, Nokia HMD/ Foxconn should know better. Unnecessarily loud cars, motorbikes, trucks etc. are really disturbing too. People are so ignorant about how loud their cars are. Manufacturers aren't very upfront about how quiet their cars are, ideally I would like a car that I cannot hear the motor at any point in time without the air drag being much louder. I hate it, that electric cars have to emit extra sound below a certain speed. They wouldn't be silent by any stretch even without the buzzer sound. I think this mandate is actually the product of the combustion engine car manufacturers lobby, who don't seem to be able to produce near silent cars. The doors on cars could close much more quietly too, there is not much reason, why that is not the case. And while we are at it, I hate how there aren't more laptops without any kind of fan. Is it so hard to have some kind of passive cooling or are we just so lazy to engineer better/ more efficient computers? I don't mind good mechanical keyboards, which tend to be rather clicky and loud. It is a satisfying experience somehow but I wouldn't mind, if the feeling was the same and the clicky sound just wasn't there.