Earphones are a set of tiny loudspeaker drivers, usually worn around or on the head itself over a user’s ears to transfer an audio signal into sound. They are transducers, which react to an electric signal by producing its corresponding sound. Headphones are made up of a diaphragm, a voice coil, and voice coils, which push the speaker cone back and forth, creating the desired audio frequency. These devices are used for many different purposes, such as hearing music, hearing speech sounds through the earphones, and playing electronic games. Headphones can be made up of many different types of materials, depending on their intended purpose.
Around the ear, earphones can be made up of many different materials including plastic, polycarbonate, and glass. Around the head, they can be made up of many different materials including plastic, foam, and even silicon. One type of headphone, called an in-ear headphone, wraps around the ear and the head, and is held in place by clip-on earplugs. This type of headphone functions well when the user is doing activities that require them to stay relatively still, such as driving or listening to music. Many drivers who listen to headphones while driving find them highly useful, since they block out outside noise and help drivers focus on the road.
Headphones can also be made up of various different components, depending on the desired functionality. The more popular types of headphones include over-the-head, around-the-ear, earbud, and in-ear headset designs. The type of driver technology that a headphone includes will depend on its overall purpose. However, all types of headphones work by allowing a sound to pass through the earphones and then bouncing it back through the speakers to the user’s ears. Most headsets use a standard 2.5 mm headphone jack, although some newer models use USB technology, which provides much faster data transfer rates.