Hoping this question does not belong in music.stackexchange.com or sound.stackexchange.com,
An unpleasant noise which gives a feeling that "something is shaking" is created when a sound intense enough is played in a place where there's bad acoustics. A buzzing noise. What exactly is the Physics behind this Phenomenon?
My attempt: Something has to be vibrating, I don't think this is resonance but something to do with Air Columns having Inelastic collisions with walls.
A more specific case: Why does changing the shape of the Truss Rod / Fret Board in an Acoustic Guitar create or fix this jarring effect? In what subtopic under Acoustics do they study phenomenon like these?