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 to…
the accounts read alike, found by meaning rather than by shared details
The sound seems to come from the sky, an intense vibration. Similar to the frequencies emitted by a diesel engine of a car with a slight acceleration or a larger engine at slow speed. Someti…
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