To put it very basically, your earphone includes a piece of plastic that vibrates in accordance to those indicators received out of your player it is connected to. The plastic vibrates due to the metal coil that’s attached to the magnet, that allows the plastic to create the noise waves that play into your ear.
That is it, actually. It seems easy enough, but I could not have considered it.
Jezen Thomas at eHow.com offers a added comprehensive explanation to us, he states that,
Evidently, you can find several types of earpieces, but all in all, that’s it.
Some earpieces, however, do feature other features. Noise canceling earpieces, as an example, can generate a tiny field of white noise round the amp itself, that acts as something of a vacuum and has the consequence of disabling exterior sound. These earpieces are also better for the health of the inner ear than most other types. Sam Costello at About.com
Chris Woodford, post for ‘Explain That Stuff.com’, provides an in depth description of those core distinctions between earpieces and speakers. Despite fundamentally working in the same way, there are variations involving the two, it seems. He says,
If, even in fact this tech discuss, you are still interested in considering what is going on to your headphones, the Youtube user Cayde Brown features a series of video lessons labeled ‘Take Apart’, which may be of significance. In one episode (which I’ll link HERE), Cayde takes a set of headsets apart and reveals to us precisely how they operate.