Earphones are a pair of small loudspeaker drivers worn in/on or around the head over a user's ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound. E...

Earphones are a pair of small loudspeaker drivers worn in/on or around the head over a user's ears. They are electroacoustic transducers, which convert an electrical signal to a corresponding sound. Earphones let a user listen to an audio source privately..