An open record of things people cannot explain

USA, Inver Grove Heights · 2018-02-10 · from the WORLDHUMMAP archive

A low hum in USA, Inver Grove Heights

It's a constant hum with a vibration. Sounds like a massive deisel engine idling down the street. I've heard this hum for over twenty-five years but the reason I'm reaching out now is because something has changed and it's becoming harder to ignore as it's affecting my health. I wake up in the middle of the night and my whole body is vibrating to it. I've taken to sleeping on my couch because there's more ambient noise to help mask it.

What they reported

First noticed: 2017

Pitch: 170Hz masks it completely.

Loudest: During the night

Where: Indoors

Symptoms: Ear discomfort (pain, fullness, throbbing), Insomnia, Sense of vibration

Changes with weather: Not that I've noticed

What stood out: a low hum

 

Others who described something like this

2018-10-06

Low frequency hum, always same frequency, I'd estimate around 50hz (at least my perception). I only hear it at/in my home, if I'm at another location, I don't think I've ever heard of it.

both described a low hum

2018-05-24

Low pitch hum estimating around 50-100hz The sound is not a perfect pure tone, and has slight volume changes, it sounds similar to the hum of a fan motor. I have driven around in an attempt

both described a low hum

2018-09-30

A low frequency Hum sound that fluctuates subtly but for the most part is steady The Hum is a low frequency and droning sound and it kind of fluctuates in tone.. almost like an idling diesel

both described a low hum

2018-02-21

Very low-pitched continuous drone. Pitch rises and falls slightly but can remain steady at times. Inaudible to my wife. Reminiscent of the hum from a large transformer/sub station but there

both described a low hum

2018-12-05

Low, soft rumble - as if a large truck were idling in the distance - it varies, but not rhythmically - I can almost "feel" the vibrations. Most predominantly at night, in the bedroom on the

both described a low hum

2018-10-18

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

2018-03-31

A disturbing, vibrating, continual rumbling sound that gets louder at night when other sounds are reduced. The noise/vibration/frequency prevents me from sleeping many nights or from ever sl

the accounts read alike, found by meaning rather than by shared details

2022-03-05

it is like an uneven engine, it doesn't seem to be the AC that is an even hum for example but more like an idling car engine but it feels like coming from the walls. It is not a "sound" but

the accounts read alike, found by meaning rather than by shared details

2019-02-22

A Low hum that I can feel vibrating in my ears. An exterior feel around my head and ears. It's a slow pulsating deep hum that vibrates. It is constant and I have realized it is not just in m

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.