Canada, Waterloo · 2022-06-01 · from the WORLDHUMMAP archive
A single, low frequency oscillating or pulsing sound that fades in and out. Oscillatory period can vary from approx. 2s to 3s; 50-60hz. the sound could be partially 'masked' by white noise or a fan, but it was quite loud, pervasive and occurred at relatively low frequencies; one typically could continue to feel and hear the sound when it was occurring, regardless of my attempts to mask it. The sound appeared to reverberate in the physical structure of the building. I believed the sound may have originated in either a structure attached to the building (say, a machine or piece of equipment on the roof or attached to a wall) or from a source causing extremely loud vibrations at some distance away. It was difficult to identify the source of the sound. It seemed to reverberate more clearly on certain surfaces or walls, but it was not louder or clearer from any identifiable or consistent direction. During a particularly disturbing period of noise, I used decibel meter app on my phone to measure sounds in a seemingly 'silent' hallway during the early a.m. hours; the decibel meter read in excess of 80 decibels. While this data is unreliable since these apps are unreliable, it was at the time surprising to me that more residents were not noticeably disturbed.
What they reported
First noticed: 2016
Pitch: 50-60hz
Loudest: During the night
Where: Indoors
Symptoms: Ear discomfort (pain, fullness, throbbing), Headache, Insomnia, Nausea, Sense of vibration, Anxiety
What stood out: a low humpulsing lightphotographed
hum, a mechanical noise, continuous, never-ending, somewhat pulsating, varying intensity, always from south, I hear it inside my closed house (all else quiet) on southern side, I do not hear…
both described a low hum · pulsing light · 20 km away
ohhhh Wow...thank you thank you thank you....so I'm not crazy!!! I am sensing something. I live in the NE US. I can certainly relate to this, I hear/sense it a lot, usually late in the ev…
both described a low hum · pulsing light · 173 km away
Low throbbing I am able to hear many things others cannot, such as the humming of electronics (lights, CRT monitors/TV's, etc.), music being played far away, road construction several miles …
both described a low hum · pulsing light · 226 km away
Sounds exactly like there is a large truck idling down the street outside. but I can actually feel the noise vibrating and pulsing inside my eardrum. The way it goes in and out mimics the so…
both described a low hum · pulsing light · 336 km away
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 · 434 km away
A low, vibrating sound that rarely stops. Often it has a pulsing quality. Sometimes it sounds bearably distant, at others unbearably close. Classic descriptions of a car or truck idling or a…
both described a low hum · pulsing light · on the other side of the country
Low frequency from around 30 to 60 Hz The sound started appearing after I was sick with severe stress. Some people from the authorities of Copenhagen have measured the sound in my apartment …
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
it sounds like the engine of a car or a electric generator coming from the ground or another building around. The presence and intensity od the sound vary from very subtil to the impression …
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