Latvia, Riga · 2018-10-18 · from the WORLDHUMMAP archive
A low hum in Latvia, Riga
Very low, constant vibration sound, similar to car engine far away or even some household item. It changes the pitch from time to time. I hear it at night only, when there are no other sounds around (household items, traffic). As I open the window, the sound sort of disappears and reappears as soon as I close the window. Seems like it is inside the apartment building I live in, but it's untraceable.
What they reported
First noticed: 2016
Pitch: Something simmilar to 75 Hertz sine sound
Loudest: During the night
Where: Indoors
Symptoms: Ear discomfort (pain, fullness, throbbing), Sense of vibration
Changes with weather: I haven't noticed, but usually it was clear night maybe cloudy, definitely no rain.
Like distant diesel engine or a large industrial fan far away. The hum appeared very sudden, about 3 months ago. Since then I've heard it, but not everyday.
Ear plugs doesn't help. Even tho…
low-pitched idling engine from 100 or 200 meters away For clarification, no one in my family has been diagnosed as Autistic or Asperger. However, I believe that several people in my family, …
Steady sinus huming infra sound 71 Hz. Seems the hum been gone for a day or two (?), then sudenly (2018-11-12, 9PM) as switched on with a button it come back, first experiend as very loud, b…
generator-like plus overtones First of all, thank You for being out there. Wikipedia "Hum" lead me here, and I can't believe I missed that out. Original personal description at my google+ pr…
both described a low hum · on the other side of the country
Hum like a large engine running in the distance that never changes tone I have lived in three houses in the past thirty years:
1989-2001 Bricktown NJ hum started and became load in the las…
both described a low hum · on the other side of the country
It sounds like a compressor or pump to me. It's always the same rhythm. The sound stays in the same tone range about 90-95 % and then changes to a lower tone range. The hum always consists o…
both described a low hum · on the other side of the country
Sounds like a car idling at a distance where I can barely hear it, but when I go outside there is no car and the sound is gone. I only hear the sound indoors, but it appears to come from out…
the accounts read alike, found by meaning rather than by shared details
Two alternate low frequency sounds. Duration of two alternate sounds is different each time. Could start and stop with any tone. In my previous apartment I was able to hear sound more often …
the accounts read alike, found by meaning rather than by shared details
A low pitched, "never ending" hum/buzz. Sounds like a train is approaching (as I live next to the train tracks, I know exactly what that sound from inside the house), but its not the trains,…
the accounts read alike, found by meaning rather than by shared details
Has this happened to you?
Write it down while you still remember the details. We will look for the others.
If this reminds you of something a friend or a relative told you once and never mentioned again, send them this page. Reading that a stranger described the same thing is usually the part that helps.
Nothing is tracked back to you and nothing is sent on your behalf. The link is just the page you are reading.
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.
Anomaly