USA, Oak Harbor · 2019-04-27 · from the WORLDHUMMAP archive
A low hum in USA, Oak Harbor
Very low frequency rumbling, like a truck idling down the road. Sound level goes up and down�not a constant tone. As much vibration as sound. Some describe it as pressure in the ears. We�ve had different people come to listen. Some don�t hear it while others feel vibration or pressure in their ears. One has to sit, quietly for 5 minutes or so to pick up on it. However, once heard, it is easy to hear again, when you know what to listen for.
What they reported
First noticed: 2016
Pitch: 33 hertz, triangle, 1/4 volume. Though this is constant and what I read is variable.
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An endless, distant low rumbling like the sound of a truck engine, but much quieter. It├»┬┐┬╜s not terrifyingly loud but I can├»┬┐┬╜t help but notice it. When I├»┬┐┬╜m focused on something, …
the accounts read alike, found by meaning rather than by shared details
Sounds like a train engine idling in the distance. It's a very low, rumbling. It is intermittent. It mostly drones at the same level, but occasionally pulses without a discernible pattern …
the accounts read alike, found by meaning rather than by shared details
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the accounts read alike, found by meaning rather than by shared details
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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