12.33.176.147 Comments Electromagnetic shakers produce vibration for test purposes. Modal testing is one example. Vibration is also used for mixing paint, sorting parts, etc.
Loudspeakers use vibration to generate sound.
The human ear converts sound to mechanical vibration and then to nerve impulses. The human heart uses oscillations to circulate blood. Ultrasonic vibration is used to break up kidney stones. This is called lithotripsy.