Imagine some thing put in the presence of loud pure white noise, say at a level that might come from a teenager's HI-FI set to annoying. And the thing is like a champagne glass, sheet metal box or other thin walled vessel. I'm not considering anything like a cannon ball or anvil.
I can foresee two scenarios:-
- The thing vibrates at it's natural self resonant frequency, but only with limited amplitude as the power content of white noise at a specific frequency is relatively small.
- The thing does nothing whatsoever as all the various frequencies present in the white noise induce vibrations that cancel each other out.
Which is it, or might there be a third possibility?