I believe that if a sound is loud enough that it wakes folks up, or keeps them from sleeping, the the source should be fairly easy to find. Especially if it isn't spread all over the place. But what do I know ?
The High-Pitched Sound With No Apparent Source
Earlier this year, the community of Forest Grove, Oregon, was dealing with a bizarre situation that kept them up at night. Multiple residents heard a strange noise. One woman was even awakened by the noise several times late at night and became seriously bothered by it. She didn’t believe that it was anything sinister, but she still wanted it to stop.
She went to the police and fire departments of Forest Grove for help. But they were unable to pinpoint a cause. The city’s employees did rule out a gas leak, a water valve, or animals making noise.
The woman who was most bothered by the noise captured sound from a video and sent it to the news. Her husband thought that it was a problem with someone’s brake pads. The sound was long, high-pitched, and screechy—similar to a train at a certain speed. But there are no trains in the area.
Although the brake pad explanation seems plausible, it would still not explain why the woman heard the sound throughout the night at odd hours. Although the sound may not be particularly worrisome, the issue has remained unsolved.
Like I said, seems as though someone somewhere could come up with the cause of the sound and then fix it. I have a hard time believing that with all the high tech stuff we have out there today, something couldn't be done!
Coffee out on the patio, as long as you can stand the heat and the 'skeeters!