Can you hear the Hum? The mystery noise that says a lot about modern life

Spoiler: linked article is an extended blurb, written by the novel's author, for a novel about someone who hears the hum.

Sounds like (no pun intended) a low frequency version of tinnitus rather than something physical.

Meh this says a whole lot about nothing. Then it goes on and tries to blame big, bad technology for maybe causing some unidentified auditory hallucination or something, without any proof whatsoever.