This is again a weird noise that’s hard to classify.
I would go for the hum phenomenon. What about you guys?
Loud “trumpet” sound recordered in Philadelphia, PA on March 14, 2012.
The video uploader’sÂ comment says:
My camera phone is not very good on sound however im sure there were other people that recorded this sound,by the end of the video the sound had stopped. very weird.
What do you think this electrifying noise is? Listen to some more on our map!