"earphone" is a correct and usable word in written English.
You can use it to refer to an electronic device worn over or in the ears for producing sound, such as a headset for a telephone. For example: "I always use earphones when I'm studying so I can listen to music without bothering my roommates."
Principal components are a microphone that converts sound into a varying electrical current, an amplifier that amplifies this current, and an earphone that converts the amplified current into a sound of greater intensity than the original.
Studies measuring the minimum audible level of hearing have been made with stimuli presented to each ear separately or both ears together (usually via an earphone and loudspeaker, respectively).
This involves measuring hearing sensitivity by using two different types of earphone.
Audio-frequency current through the coil causes deflection of the diaphragm, as in the earphone.
A headphone may be equipped with one earphone or two and may include a miniature microphone, in which case it is called a headset.
In air-conduction testing, a pure tone is presented via an earphone (or a loudspeaker).
In bone-conduction testing, instead of using an earphone, an electromechanical earphone is placed on the skull.
The loudspeaker performs the same function as the earphone of the telephone receiver but is required to displace a larger volume of air.
Headphone, small loudspeaker (earphone) held over the ear by a band or wire worn on the head.
The woman next to me had two mobiles to check, and the man opposite had an earphone in, and a laptop on the go.
A fledgling tech company from the US is attempting to fix the problem of tangled earphone cables once and for all with Split: a stand-alone MP3 player that is just a pair of earphones, without buttons or cables of any sort.
