Italy, Trieste · 2020-05-25 · from the WORLDHUMMAP archive
A low hum in Italy, Trieste
The first time I thought it could be the low sound of a cargo ship horn in need, very far from the coast. The sound I hear is very low and vibrant like a cutoff frequency filter, and it has a sine waveform with a constant slow oscillation There was only a big factory in the block, that closed some months ago. It was working expecially during the night, so I had a very different background noise. I realized about this HUM strange low frequency/vibration only one month after the closure of the factory. This area is very quiet now, no other factories or trafic. The only alternative source can be the new 5G antenna on the top of my hill, but I cannot be sure, this sound is similar to many recordings I found searching for HUM. This is for me a completely different experience
What they reported
First noticed: 2020
Pitch: About 80 Htz, it's a sine waveform
Loudest: During the night
Where: Indoors
Symptoms: Insomnia, Sense of vibration, I'm a little bit afraid of it, i don't know what it could be. And also angry because I can't stop it, when it start
Changes with weather: I still haven't realized it yet
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https://www.youtube.com/watch?v=hPAt8bIxg…
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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