AnomalyVery deep almost bass like sound. Almost as if a very large engine is idling very far away. Depending on head orientation the sound intensity can increase and decrease. Just slight head movement, maybe a couple degrees of movement either way, significantly effects the sound.
Greenfield Center NY 12833, USA · 2019-12-26 · from the WORLDHUMMAP archive
An account in Greenfield Center NY 12833, USA
What they reported
First noticed: 2019
Pitch: 28 hertz
Loudest: Equal night and day
Where: Indoors
Symptoms: Sense of vibration
Changes with weather: No
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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.