An open record of things people cannot explain

U.S.A., Chapel Hill · 2019-08-26 · from the WORLDHUMMAP archive

A low hum in U.S.A., Chapel Hill

A low-frequency, usually "throbbing" hum. The amplitude changes a bit, at a frequency of about 2 Hz. I hear it constantly in my house. When I go outside, I often hear other mechanical sounds (traffic in the distance, airplanes, construction vehicles, lawnmowers and other engines), but the hum is difficult to hear outside with all of the ambient sounds. Yes, it's driving me nuts. I started noticing it about 2 years ago. Thank you so much for taking a scientific approach to this problem.

What they reported

First noticed: 2017

Pitch: 95

Loudest: Equal night and day

Where: Indoors

Symptoms: Insomnia, Anxiety

Changes with weather: no

What stood out: a low hum

 

Others who described something like this

2018-02-08

It's a low electronic hum. Like a refrigerator compressor or an engine that's running far away. It's a sinuous sound. I hear it upstairs at night. I never hear it outside. My husband can't h

both described a low hum · 42 km away

2019-03-19

It sounded kind of like a diesel engine. It had a throbbing quality. It was louded indoors. I could hear it outside but it was less intense. When I tried to locate the hum, I went outside

both described a low hum · 182 km away

2020-01-02

it sounds like a deep humming noise. when i first started hearing it and it started to affect me it reminded me of an old plane propeller (1900s), but from a distance. it doesn’t sound very

both described a low hum · 139 km away

2019-03-24

I've heard the loud construction like sound when I lived in Rock Hill SC it was between 2-4am. We moved out to Sharon SC and I hear the low hum mostly at night. We live in the woods in the m

both described a low hum · 236 km away

2019-12-26

A low mono-tonal hum, as though of a refrigerator, but more constant when heard-I've always thought of it as something that just IS, below all other sounds. I don't always hear it, but when

both described a low hum · 240 km away

2019-05-01

constant throbbing low hum, so loud to me but no one else hears it, is not tinnitus, sounds similar to a airplane heard from a distance but is constant never gets closer or fades away I live

both described a low hum · 282 km away

2020-03-14

A low frequency noise that fluctuates better two frequencies The noise is driving me crazy, to the point I am ready to move, I drive my wife nuts asking can you here that hum, she on occasio

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

2018-02-25

Low frequency hum The hum is loudest inside the house but sounds like it is coming from outside. When I go outside it is still audible but less so with ambient noise and I cannot determine a

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

2018-04-09

a very low frequency hum in two different specific frequencies. The hum switches back and forth between the two frequencies intermittently. When the environment I'm in has other noises the

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.