Canada, Coquitlam · 2018-03-03 · from the WORLDHUMMAP archive
Rumbling in Canada, Coquitlam
Can't be blocked out by ear plugs. Low rumbling with variation in duration and intensity with some intermittent silence. Watching back hoe in operation one evening during my search for the source, I noticed that the sound could parallel this machine's operation in sound modulation and timing - but it was not conclusive as I was outdoors and beside the machine and not at a distance indoors.
What they reported
First noticed: 2010
Pitch: Am not hearing it now.
Loudest: During the night
Where: Indoors
Symptoms: Insomnia, irritation/frustration
Changes with weather: Didn't take notice but could have been worse in the rain.
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both described rumbling
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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