AnomalySimilar to a diesel engine at idle Just want to commit that I'm very happy to learn research is getting more serious about this phenomena. There were times a few years back when I wondered if I was experiencing auditory hallucination or perhaps a mental issue. I have since come to realize this problem exists with a multitude of individuals. However, I still remain apprehensive to mention it to others for fear they will think "I've lost it". lol Thanks for the opportunity to provide this input.
United States Valdosta 31605 · 2018-09-14 · from the WORLDHUMMAP archive
An account in United States Valdosta 31605
What they reported
First noticed: 2015
Pitch: Around 40 t0 45 Hertz (Triangle)
Loudest: During the night
Where: Equal indoors and outdoors
Symptoms: Insomnia;Anxiety
Changes with weather: I have not noticed a change in sound based on weather changes.
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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.