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
Lutsen MN 55612 · 2018-03-19 · from the WORLDHUMMAP archive
Sounds like a Diesel engine idling off in the distance, it is faint but constant and it will also fluctuate wooo...wooo... woooo.. My house is built on ledge rock overlooking Lake Superior. I�m wondering if the combination of the Great Lake and ledge rock acts as an amplifier. I can only hear the sound inside my home that is built into the ledge rock. If I go outside I can�t seem to hear or feel the sound as easily. I have turned off all the power to my home so I know it isn�t something mechanical in my house. I seem to be able to hear the hum better than my wife.
What they reported
First noticed: 2013
Loudest: During the night
Where: Indoors
Changes with weather: No
What stood out: a low hum
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
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
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
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
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
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
Dull Hum The hum sound has been present the entire time I've owned this particular home. It sounds like a truck idling in my driveway and disrupts my sleep. My bedroom is on top of granite…
the accounts read alike, found by meaning rather than by shared details
It is an extremely low vibrational hum that can be felt in my body. I just want to point out 1. It feels like it comes from he Earth. 2. My microphone can pick up the sound from my sound boo…
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.