AnomalyLow vibration that randomly pauses, like a truck idling outside (a truck was my first guess, before I searched this topic and saw others also described it as a truck. My next guesses were hot water tank or fridge, I shut all power, it was not those). I am Not bothered by the sound, I don’t lose sleep, I’m just curious as to what it is.
Canada, Salt Spring Island · 2022-05-28 · from the WORLDHUMMAP archive
An account in Canada, Salt Spring Island
What they reported
First noticed: 2020
Pitch: 246, but an octave lower… a low, low “b” on my piano.
Loudest: During the night
Where: Indoors
Symptoms: Sense of vibration
Changes with weather: Sorry, I have not noticed.
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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.