The Hum is a phenomenon involving widespread reports of a persistent and invasive low-frequency humming, rumbling, or droning noise not audible to all people.
Links and Show Notes The Hum - Wikipedia BBC NEWS | UK | Have you heard 'the Hum'? Ungeniused #2: Dancing Mania - Relay FM Sonic youth: The high-pitched sound alarm for under 25s Taos Hum - YouTube Tinnitus - Wikipedia Otoacoustic emission - Wikipedia