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
United States Austin 78750 · 2018-02-09 · from the WORLDHUMMAP archive
It's a resonant "hum", lower in pitch at night, higher thin-sounding whine during the day. The pitch is not an exact note. When higher I first thought it was bugs but no fluxuation like bugs do. When lower, I first thought it was machinery or construction equipment or vehicles, but again, no fluxuation. It is constant, does not pulse or change volume. Similar to hearing batteries in watches, overhead fluorescent lights or the hum of electronics. I suffer from chronic pain and fatigue due to degenerative spine and joint disease last 25 years. I've always had very sensitive hearing and depending on what type of noise I'm exposed to, it can cause agitation, physical and mental stress increasing my chronic pain & fatigue levels. I have a lot of hardware in my body containing titanium and plastic components: 6 dental implants, 3 neck fusions, shoulder reconstruction with titanium clips, 2 lower back fusions, bilateral knee replacements.
What they reported
First noticed: 2012
Pitch: Anywhere from 220-1040 hertz sawtooth
Loudest: During the night
Where: Indoors
Symptoms: Ear discomfort (pain, fullness, throbbing), Insomnia, Sense of vibration, Anxiety, Fatigue, agitation, increased chronic pain
Changes with weather: Possibly
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
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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.