For the past several months, in my neighborhood, there is a periodic very low frequency thumping sound. Imagine a chopper motorcycle idling, but lower frequency and very distant. It comes, lasts about 20 minutes, and then stops. I’ve only heard from one other person in the neighborhood who has noticed it.
Closing the windows does nothing because it’s such a low frequency. Also, because it’s a low frequency, it sounds the same whether inside or outside, and it’s impossible to figure out which direction it’s coming from. I usually miss it during the day, but at night, if I hear it I can’t get to sleep until it stops.
For the past several months, in my neighborhood, there is a periodic very low frequency thumping sound. Imagine a chopper motorcycle idling, but lower frequency and very distant. It comes, lasts about 20 minutes, and then stops. I’ve only heard from one other person in the neighborhood who has noticed it.
Closing the windows does nothing because it’s such a low frequency. Also, because it’s a low frequency, it sounds the same whether inside or outside, and it’s impossible to figure out which direction it’s coming from. I usually miss it during the day, but at night, if I hear it I can’t get to sleep until it stops.
The Hum