Mysterious rumbling noise in the metro

[Mr. Blue Sky]

Again, this is a worldwide phenomena. The rumble, hum, whatever you call it is very real. Scientists say about 2% - 4% of the people can hear this noise. When I mentioned my experience upthread, I should have noted my wife never hears it.

There are many theories, but every locale have people trying to explain it by pointing to local things like many here point to Tinker, Will Rogers, etc. Except, this is heard all over. For example, this month it’s Houston https://ktrh.iheart.com/content/2019...ghout-houston/

Many references in various newspapers, magazines, online...
http://theconversation.com/cracking-...wide-hum-60296
http://www.bbc.com/future/story/2016...-the-world-mad
https://metro.co.uk/2017/12/08/earth...plain-7142605/

I’m glad this is being discussed because, honestly, I never mention it, simply because I fear what people with think. Mental state, you know, that kind of thing.

[Dob Hooligan]

I think that billions of people worldwide will (A.) make, and (B.) hear all kinds of rumbling sounds. I think it is very easy for 1 out of 25, or 1 out of 50, people to have a different, or enhanced, sensitivity to sound, I am also of the opinion that it is one of those things that has never gotten "in depth research" into this phenomenon, so we are left guessing (and afraid of being labeled a kook).
My business is a couple blocks from State Fair Park, and windy days would generate some kind of resonant sound that made us think it was large, overhead electrical lines vibrating. Funny thing is that I don't notice it since the Space Needle has been destroyed.

[rezman]

I used to live just north and west of the Fair Grounds at 12th & Goff. I could lay in bed at night and clearly hear the space needle emitting low to medium pitched howling as the wind blew through it, along with the sounds of the cables clanging against the steel structure.

[onthestrip]

I just heard it in The Village. It sounds like an airplane flying really low, but at a snails pace because it lasts for what feels like forever.

A fighter jet circled around a few times on Saturday. Its amazing how loud those can be, because it wasnt like it was that low to the ground.