Have you ever heard recordings of Tibetan Buddhist monks chanting? Some of them chant at frequencies lower than any note one can hit on a piano.
By the way, does anyone here know of an online acoustic generator that I can access, to hear a tone of 110 hz? I’d like to see what it does.
I haven’t heard any chanting. There is an annoying background sound at home just about all the time, but I’m sure it’s at a higher frequency than 100 - 110 Hz.