An open record of things people cannot explain

95421 · 2018-02-27 · from the WORLDHUMMAP archive

A low hum in 95421

Sounds like a motor running from a hot tub (had our renter turn off his) Noise still there. It has a steady, low hum and vibration. Sounds like it's swooshing from one end of the house to the other. All coming from the attic. Sometimes the sound is louder, like a motor kicking in to its next cycle. Sound is similar to a refrigerator when it's running. Turned off the power, noise is still there. In addition, sounds like my PC running. Turned off the power, noise is still there. I've checked the surrounding area, I am still coming up with no source to this horrible hum. At this point in my life, I am trying to find the perfect sound/device to mask the hum. I will never stop my search to find out where the noise is coming from.

What they reported

First noticed: 2012

Pitch: 12 or 13 Hertz (Sine box checked)

Loudest: During the night

Where: Indoors

Symptoms: Headache, Insomnia, Anxiety

Changes with weather: Not sure. I am just starting to keep a record of this.

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

2021-10-11

It is a low-frequency humming noise that has no explanation or source. I hear it mostly at night and inside my home. The noise is similar to a train or a diesel truck engine idling and the

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

2019-03-13

Low, constant, almost pulsing hum�like that of the background engine noise of the Enterprise on Star Trek: TNG or the 'glowing' hum of the nuclear reactor on the Simpson's; a little rap

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

2020-09-26

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.