U.S., Double Adobe · 2018-02-25 · from the WORLDHUMMAP archive
A low hum in U.S., Double Adobe
Low frequency hum, mostly constant, sometimes cycles, like a diesel engine idling. It has a thumming vibration that is felt inside the body. Earplugs or ear covers do not silence it. It seems to come from below ground but sometimes seems to be overhead. It stops suddenly. I hope this mystery gets solved soon. It is invasive.
What they reported
First noticed: 2004
Pitch: close between 95-100, tone pitch is lower
Loudest: During the night
Where: Indoors
Symptoms: Sense of vibration, sleep disturbance, very annoying
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both described a low hum
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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