I am sitting in a room different from the one you are in
now. I am recording the sound of my speaking voice and I am
going to play it back into the room again and again until
the resonant frequencies of the room reinforce themselves
so that any semblance of my speech, with perhaps the
exception of r-r-r-rhythm, is destroyed. What you will
hear, then, are the natural resonant frequencies of the
room articulated by speech. I regard this activity nnnnnot
so much as a demonstration of a physical fact, but more as
a way to s-s-smooth out any irregularities my speech might
have.