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Headphones (or head-phones in
the early days of telephony and radio) are a pair of small listening devices
that are designed to be worn on or around the head over a user's ears. They
are electroacoustic transducers, which convert an electrical
signal to a corresponding sound in the user's ear. Headphones are designed to allow a single
user to listen to an audio source privately, in contrast to a loudspeaker,
which emits sound into the open air, for anyone nearby to hear. Headphones are
also known as ear speakers,
earphones or, colloquially, cans Circumaural and supra-aural
headphones use a band over the top of the head to hold the speakers in place.
The other type, known asearbuds or earphones consist of
individual units that plug into the user's ear canal. In the context
of telecommunication, a headset is a combination of headphone
and microphone. Headphones either connect directly to a signal source such as
an audio amplifier, radio, CD player, portable media
player, mobile phone, video game consoles,electronic musical
instrument, or use wireless technology such
as bluetooth or FM radio. Early headphones were first used by
radio pioneers (crystal sets) and also by radio telephone and telegraph
operators allowing a better audio reception without disturbing others around.
Initially the audio quality was mediocre and a step forward was the invention
of high fidelity headphones.
Headphones are made in a range of different
audio reproduction quality capabilities. Headsets designed for telephone use
typically cannot reproduce sound with the high fidelity of expensive
units designed for music listening by audiophiles. Headphones that use
cables typically have either a 1/4 inch (6.35mm) or 1/8 inch (3.5mm) phone
jack for plugging the headphones into the audio source. As of 2015, most
headphones are amplified by a headphone amplifier, either an integrated
amplifier (e.g., in an iPod) or a standalone unit. In the 2010s, headphones are
used by people in everyday life to listen to audio material such as recorded
music, podcasts, or radio shows. Headphones are also used by people in
various professional contexts, such as audio engineers mixing sound
for live concerts or sound recordings and DJs,
who use headphones to cue up the next
song they will play without the audience hearing, aircraft pilots and call
centre employees. The latter two types of employees use headphones with an
integrated micro path.
Circumaural and supra-aural headphones use a band
over the top of the head to hold the speakers in place. The other type, known
asearbuds or earphones consist of
individual units that plug into the user's ear canal. In the context
of telecommunication, a headset is a combination of headphone
and microphone. Headphones either connect directly to a signal source such as
an audio amplifier, radio, CD player, portable media
player, mobile phone, video game consoles,electronic musical
instrument, or use wireless technology such
as bluetooth or FM radio. Early headphones were first used by
radio pioneers (crystal sets) and also by radio telephone and telegraph
operators allowing a better audio reception without disturbing others around.
Initially the audio quality was mediocre and a step forward was the invention
of high fidelity headphones.
Headsets designed for telephone use typically cannot
reproduce sound with the high fidelity of expensive units designed
for music listening by audiophiles. Headphones that use cables typically
have either a 1/4 inch (6.35mm) or 1/8 inch (3.5mm) phone jack for
plugging the headphones into the audio source. As of 2015, most headphones are
amplified by a headphone amplifier, either an integrated amplifier (e.g.,
in an iPod) or a standalone unit. In the 2010s, headphones are used by people
in everyday life to listen to audio material such as recorded
music, podcasts, or radio shows. Headphones are also used by people in
various professional contexts, such as audio engineers mixing sound
for live concerts or sound recordings and DJs,
who use headphones to cue up the next
song they will play without the audience hearing, aircraft pilots and call
centre employees
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