How are headphones with single drivers able to make sounds that are “multiple sounds at the same time?´´

Question

So from what I know, the drivers vibrate at a given wavelength and that makes a sound. That makes sense to me of how you can create voice for example. But how does multiple instruments + voice in one driver work? You hear all them seperately but at the same time?

To me this sounds like a monitor pixel making more than 1 pixel at once.

In: 135

Answer 1

You know how your eardrum is just a single membrane reacting to air pressure, but you can hear all kinds of simultaneous noises? Well, that but backwards. A single speaker driver can move in the pattern that matches the sum of all the waveforms it is being asked to replicate.