How speakers make sound

Speakers (also called loudspeakers) push and pull surrounding air molecules in waves that the human ear interprets as sound. You could even say that hearing is movement detection. So what makes a speaker travel back and forth at just the right rate and distance, and how does that make sound?

This animagraff made the front page of Reddit technology, has been featured on Daring Fireball; and on twitter by Sony, the Bob Moog Foundation, and Meyer Sound, among many others.

fonte: http://animagraffs.com/loudspeaker/