Other people can hear that??!!!
TG!! Whenever I've mentioned it I've been 'looked at funny'. :distrust:
That's the reason I detest those wind turbines, I can hear them too, many can't. They drive me batsh*t after 5 minutes!
I can't actually hear it in that video, but that could be down to the speakers in the laptop, I recognized the 'description' though.
I hear that low, barely audible hum here quite often, usually around 2am ish, and I've described it as a distant, powerful, diesel motor, but as this is a tiny town with no industry it's highly unlikely anyone would be running anything at that hour.
Sometimes I hear it in the daytime but I seem to be the only one who can pick it up. There are roadworks a few kilometres from here so I shrugged it off to being that, but 2am??... and there's no change in pitch, no rev up, just an idling 'dozer like hum. If it was someone's air-con or something then I'd hear it all the time, or for longer, but it usually only lasts from 10 mins to an hour or so.
It does keep me awake a few seconds longer than usual sometimes but more from wondering what it is than going nuts over it.
I used to hear it in Sydney, years ago, but there was a rail yard 2 K away and I put it down to being idling diesel locomotives. No trains within 20k of here though.
Strangely, I lived for 10 years in a mining town and never heard it there at all despite being surrounded by mining machinery on a massive scale and a constant stream of coal trains passing through. It's a particular 'tone', and extremely low volume and pitch.
I had my ears tested around 10 years ago and seems I have a wider than average hearing range, into both low and high pitch so maybe that's why I hear it when others don't.
Wouldn't ya know? Seems the only thing age hasn't rusted out is my ears.

layful: