![Diagram of an acoustic grand piano.](http://static.sciencelearn.org.nz/images/images/000/004/102/full/PHYSICS_SOUND_ART_03_Sound_-_resonance_Piano_v3.jpg?1674173136)
The mechanical action of an acoustic grand piano uses a number of different parts. When a key is released by the player, a damper falls back onto the strings, stopping the wire from vibrating and therefore stopping the sound or dampening the resonance.