United States of America, Plymouth · 2023-12-31 · from the WORLDHUMMAP archive
A low hum in United States of America, Plymouth
It is a very deep, soft, constant hum, like an idling truck parked a few doors down. I cannot pinpoint its source. I have asked my housemates, but they don't hear it.
I have walked all around the house inside and around the neighborhood, but never found the source.
What they reported
First noticed: 2020
Pitch: The closest i could come on the generator was 40 hrtz sine. However, this is not a deep enough sound!
Loudest: During the night
Where: Indoors
Symptoms: Insomnia, Anxiety, Irritation and frustration
Changes with weather: Hmmm. That is hard to say. I do not tend to notice it unless the wind is calm.
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both described a low hum · 109 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