Don't take vibrations too lightly. Take a look inside your speakers. Chances are the wires are held in place with cable ties. Look inside your electronics. The caps and some other components usually get potted or strapped tightly to avoid what? Vibrations. You can hear this.
And for you vinyl folks. What does it sound like when you drag a cartridge lead on the surface of an LP? You can hear this plainly. It is vibration.