QUOTE
I think a hyperbass flute you really would only feel the notes instead of hearing them!
Good ol' infrasound. I believe some of the pipes of the Royal Albert Hall organ give out infrasound. Apparently some people find it very unsettling, they say it makes a room feel as though its haunted.
Trivia fact: Elephants communicate to each other over long distances using infrasound.
QUOTE
On the very very low notes on the bassoon, you can hear them, but boy can you also feel them!
A good double-bass will do the same