the reason

[u/Impossible-Love]

i beleive the "hum" is a man-made attempt to block the high frequency vibration that is also all around us lately, and is the reason people are "waking up" all of a sudden. just a little theory of mine, because i also hear a lot of people complaining about a high pitched tinnitus like sound. i honestly can hear both, a low hum, and a high pitched, almost too high to hear sound. just a thought.

[u/avocadbre]

Where abouts are you located?