Why on iPhone headphones appear small holes?

On the headphones of Apple always appear small holes but certainly many people, even those who still use this item everyday still do not know their functions. So, what are the small holes on the iPhone headphones?

1. Why are there three plugs and three legs in the power plug?

The small holes on the iPhone headphones are not for Microphones, their mission is to make the sound more audible. This is a smart solution that Apple has applied to give users a more perfect sound experience.

The Apple headphones are integrated with tiny speakers inside. These speakers work by vibrating a cone-shaped electric field. This cone unit pushes the sound out, creating sounds that reach the user's ears. But, the vibrating motion of the cone creates pressure, making this small speaker harder to vibrate, operating inefficiently.

To solve this problem, Apple created tiny holes on the headset so that the air easily circulates, preventing the creation of pressure on tiny speakers inside the headphones and making them work. more effective, creating better sound, deeper bass.