Freiburg 79110, Germany · 2018-03-24 · from the WORLDHUMMAP archive
A low hum in Freiburg 79110, Germany
Very low frequency hum, like the sound a diesel vehicle would do from a distance before getting too close, but constant all the time. I can hear the noise better when it is completely silent and it is more intense in soundproof rooms. I don't hear the noise at all if I use noise cancelling earphones or if I wear ear plugs.
What they reported
First noticed: 2017
Pitch: 80-90 Herz Sine
Loudest: During the night
Where: Indoors
Symptoms: Ear discomfort (pain, fullness, throbbing), Headache, Insomnia, Sense of vibration, Anxiety
Changes with weather: It is loudest in dry weather, since wind and rain sounds mask it
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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.
Anomaly