Low stable frequency sound, same as a caterpillar engine which would be 500m away. In july 2019, the hum suddenly stopped for a day.
An another time, in 2019, the hum tune suddenly became higher for a few seconds, then lower to graduatly adjust to the rigth tune.
What they reported
First noticed: 2011
Pitch: 61Hz (exactly as i'm amator musician, i can hear when my guitar is exactly tuned)
Low, soft rumble - as if a large truck were idling in the distance - it varies, but not rhythmically - I can almost "feel" the vibrations. Most predominantly at night, in the bedroom on the…
It is a dull, so low frequency that it physically hurts my head and will give me a headache. I feel it in the back of my head, and it fills my ears like when you walk into a sound dampening …
Low frequency... Like large diesel engine very far away.. Like a twin turbo prop engine flying at low altitude, but at some distance. The sound is not as bad when i go downstairs in my own h…
Low hum almost like a distant tug boat horn going off repeatedly My wife also heard it and it scared my 6 month old puppy who would not stop pacing back and forth until the humming stopped. …
A low hum with a specific pattern of long and short hums. Hear it mainly out of my right ear. It's not always constant. Some days I don't hear it at all and other times it's very loud (to me…
Hum that is consistent, but periodically stops for a few seconds to 15 seconds and starts again. I first thought it was some equipment that would start and stop. None of the sites about the…
both described a low hum · 425 km away
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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