A sort of low motor ticking over. I hear it when in my bathroom overnight and very early morning, when everywhere else is quiet I thought the noise could be caused by an election windmill a mile from my home but I hear it when the windmill is not in action too
L11 3 · 2018-03-01 · from the WORLDHUMMAP archive
An account in L11 3
What they reported
First noticed: 2011
Loudest: During the night
Where: Indoors
Changes with weather: Louder during the spring and summer months
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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.