brown noise
... I think it's unlikely that anybody's abdominal cavity is much good as a resonator; but if drive a crap resonator hard enough you can still get some resonant enhancement -- just not very much.

Perhaps loud enough brown noise might work (if indeed it does) directly, without the resonance effect.

Any passing acoustic anatomicians care to comment on losses and frequency response in the human abdominal cavity? No?
(haberman is singing in the changes, Thu 3 Jul 2008, 15:54, Reply)