Uneasy feeling in cinema

[icedcactus]

I've been told that cinemas sometimes use a very low frequency (inaudible) rumbling sound to get people to move out of the theatres/cinema complex after a movie. Apparently it makes people feel uneasy (even though they don't know why) and they are quicker to move out. Is this really what happens?

[silenus]

Is this really what happens?

No.

The Master's take (http://www.straightdope.com/classics/a1_280a.html) on infrasound.

[Gene Frenkle]

slightly off topic, but the movie Irreversible used a low frequency noise during the beginning of the movie to give the viewer an uneasy feeling, which given the subject matter, was a bit redundant...