Low hum, sometimes pulsating, sometimes not. It is very loud. It sounds like a propeller airplane way off in the distance, but it doesn├»┬┐┬╜t go away. Or an 18-wheeler on a busy freeway, …
both described a low hum · pulsing light
Santa Clara County, San Jose 95129 · 2018-12-20 · from the WORLDHUMMAP archive
Very low frequency, has changed over the years from a steadier sound to "pulsing" and louder. I believe it is resonating the walls of the (enclosure) house. It can be heard better inside an enclosure. It wasn't loud enough to be heard in a vehicle until after the day it stopped, then came back with a vengeance. I used a car stethoscope to listen and I can hear it on the house walls, trees, the ground outside.
What they reported
Pitch: 30 seems to match, also 60, Sine
Loudest: During the night
Where: Indoors
Symptoms: Ear discomfort (pain, fullness, throbbing), Headache, Insomnia, Nausea, Sense of vibration
Changes with weather: It used to, seemed maybe louder in colder weather or when raining
What stood out: a low humpulsing light
Low hum, sometimes pulsating, sometimes not. It is very loud. It sounds like a propeller airplane way off in the distance, but it doesn├»┬┐┬╜t go away. Or an 18-wheeler on a busy freeway, …
both described a low hum · pulsing light
Sometimes pulsing, sometimes droning, often a combination of both It is hard to answer the headshake question because when I move my neck/head back and forth my neck joints make a noise, and…
both described a low hum · pulsing light
Low frequency distant vibration, resembling plane engine or purring of a cat. The sound (a humming vibration) is not constant, it comes and goes. It is not a linear/constant sound, it is sli…
both described a low hum · pulsing light
It comes an goes , it's rarely a constant , however the hum sustaines for minutes on end at times , pulsating as well . I've looked into Flightradar24 & there is a refinery near my location…
both described a low hum · pulsing light
Pulsating low frequency noise, sounds like some sort of aircraft hovering in the sky. Could be likened to a train passing through a tunnel. The hum will wake me out of my sleep, with a sense…
both described a low hum · pulsing light
mixture of pulsating and steady, similar to a diesel generator operating further away The hum isn't noticeable outside, also initially thought it may be main electric cable, however turned o…
both described a low hum · pulsing light
Low frequency modulating hum Used a stethoscope on water line, gas line, walls, concrete floors and turned electricity off thinking it was something running in the attic. We had bought this …
the accounts read alike, found by meaning rather than by shared details
Low frequency - sounds like an airconditioning unit or low frequency diesel truck in the distance. Is louder sometimes than other. Sometimes really loud - particularly at night when everythi…
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.