USA, Elk Plain · 2018-04-08 · from the WORLDHUMMAP archive
LIke a running generator, location dependent, can hear only in an enclosed space. Ear plugs do not help. I have started surveying my area by parking my car in quiet areas and killing the engine. So far I can still hear it 5 miles from my home. Just odd I would love to localize and Identify the source to satisfy my curiousity.
What they reported
First noticed: 2010
Pitch: Between 100 and 110 Hz sinewave
Loudest: During the night
Where: Indoors
Symptoms: None, my CPAP machine blanks it out.
Changes with weather: Sometimes it is intermittent during rain (normal then attenuated)
Sounds like someone in a vehicle while it’s running outside my house And someone is playing music with bass in the car and I can hear the bass shake the car and make that sound when the base…
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This is a Hum report from Dr Glen MacPherson's World Hum Map, an open, worldwide record of people who hear an unexplained low-frequency hum. Reproduced with permission and with thanks; the project is at thehum.info. We remove anything on request. Location shown is approximate.
Anomaly