Humming noise

Jill a fridge can do that but others we hope will post further suggestions such as air cond, tub recir, etc etc

Yea yes Marie, after retirement esp we notice such don't we

She said she turned off the main breaker. Quite often these sounds can be from water or gas pipes coming to the house or in the ground nearby, or carried through the ground from industrial plant or electrical substations some distance away, or caused by wind. Where I live in England (the Bristol area) there is a famous 'Bristol sound' which has plagued people for years. Suspects included natural gas pipelines and wind farms. but scientists now believe it is caused by ocean waves drumming on the sea floor and is carried through layers of rock in the ground. It might affect only one or two houses in a street, and only about 2% of people can hear it. Other similar phenomena are reported across the world, from Largs in Scotland to Taos, New Mexico.

Omigosh Con, I hafta read slower

Interesting read on sounds.
http://www.livescience.com/43519-taos-hum.html

Thanks Cis for that link. Remarkable

Always a pleasure, dale.

Why thank you Cis

Forget obvious pun

That was an interesting link.
I'm wondering who our poster should call to suss out the problem at her place.

Now I'm off reading the side articles next to that link, as I'm interested in most of them, especially the ones on tinnitus, already having several article on it in one of my computer files. I've had it since one day or evening in 1986, when I was studying for my architectural boards in an incessant stressed way. Suddenly (or likely it's not at all a sudden thing, just seemed like it then) I had ringing ears. So I've had it 30 years. No wonder I'm wacko. Instead of blaming it on all the concerts I ever went to or how many times I was working with or around electric saws, I blame it on the evil Ear Gremlin.

I'll agree with Contrex who mentioned pipe in wall or other surroundings, but naturally from me that's just a guess.

I was also - around the same time - hit on the back of the head one day when we were watching basketball at Venice Beach, in a two court set up, my back facing the second court, from where the ball came slamming to my head. A deaf friend, Sozobe of a2k, who knows a lot about the medical issues re deafness, assured me that was unlikely as a cause and I've not read anything that would disagree with her take.

We don't even know what country they live in.

Yes. I'm wondering though that an electrical engineering firm could help, or.. an ordinary electrician.

Maybe one here will see the post.

Having spent a lifetime in electronics I do occasional experience a kind of whistling....