Headphones (also known as earphones, stereophones, headsets, or the slang term cans) is a transducer that receives an electrical signal from a media player or receiver and uses speakers placed in close proximity to the ears (hence the name earphone) to convert the signal into audible sound waves.
Headphones may be used to prevent other people from hearing the sound either for privacy or to protect others. They are also used to exclude external sounds, particularly in sound recording studios and in noisy environments.
Generally headphones can be divided into two categories, closed and open. Closed headphones isolate background noise better, while open headphones offer a more "open" sound. Typically open headphones will sound better than similarly priced closed headphones.
Using headphones at a sufficiently high volume level causes temporary or permanent hearing impairment or deafness. Other risks arise from the reduced awareness of external sounds — some jurisdictions regulate the use of headphones while driving vehicles. Also, most European countries have imposed high penalties since 2002 on drivers not using a headset while operating a mobile phone in a car, to ensure that drivers keep their hands on the vehicle's controls.
Such earphones are usually small and lightweight, and normally a pair of earphones are connected by a resilient bridge spanning the head for biasing the earphones against the ears.
It is an object of the invention to combine a head sweatband with earphones to permit both components to function in their normal manner, and wherein the sweatband provides the support and positioning of the earphones to the wearer's ears.
The earphones are loosely located within the sweatband so as not to interfere with the stretching of the fabric, and the sweatband permits the earphones to be comfortably located adjacent the wearer's ears, even during extensive head movement.
In other words, an earphone is a small loudspeaker held or worn close to the listener's ear or within the outer ear.
Common forms include the hand-held telephone receiver; the headphone (q.v.), in which one or two earphones are held in place by a band worn over the head; and the plug earphone, which is inserted in the outer opening of the ear.
There are several custom made earphones that offer several features to the user and come in high fidelity, full-bandwidth transducers, with a natural design to rest comfortably in the ear, a tight seal for sound isolation and a secure fit.
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