The hum that only a few can perceive: Potential sources of a low-frequency sound

Some people occasionally hear a low buzzing or humming sound that doesn't have a clear source. An estimated 2–4% of the world ...
The New York Times

A Phantom Humming Has a Connecticut City at Wits’ End

West Haven, Conn., has budgeted $16,000 for an acoustics expert to try to pinpoint the source of a low-frequency disturbance that has disrupted residents’ lives. By Neil Vigdor Neil Vigdor reported ...