portable CD player
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A portable CD player is a
portable audio player A portable audio player is a personal mobile device that allows the user to listen to recorded audio while mobile. Sometimes a distinction is made between a ''portable'' player, battery-powered and with one or more small loudspeakers, and a ''pers ...
used to play
compact disc The compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony to store and play digital audio recordings. In August 1982, the first compact disc was manufactured. It was then released in October ...
s. The first audio player released was the Discman D-50 by Sony.Lungu, R
"History of the Portable Audio Player."
2008-11-27.


Features

The basic features of a portable CD player are: #Play/Pause button #Stop button #Rewind button #Fast forward button #Hold button (some models) #
Liquid crystal display A liquid-crystal display (LCD) is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals combined with polarizers. Liquid crystals do not emit light directly but in ...
#Headphone/Audio out socket The play/pause button allows the user to pause in the middle of a track (song) and resume play where the listener left off by pressing the button again. The stop button stops play. The fast forward and rewind buttons can be held down to move rapidly forward (fast forward) or backward (rewind) in a track; play will resume once the button is released. The liquid crystal display provides a visual indicator of remaining battery life, the number of the track currently playing, and the amount of time elapsed on the track. Some portable CD players can play
CD-R CD-R (Compact disc-recordable) is a digital optical disc storage format. A CD-R disc is a compact disc that can be written once and read arbitrarily many times. CD-R discs (CD-Rs) are readable by most CD readers manufactured prior to the int ...
/
CD-RW CD-RW (Compact Disc-Rewritable) is a digital optical disc storage format introduced in 1997. A CD-RW compact disc (CD-RWs) can be written, read, erased, and re-written. CD-RWs, as opposed to CDs, require specialized readers that have sensi ...
discs and some can play other formats such as MP3-encoded audio. While audio typically is output via a headphone connector, higher-end models may feature an additional integrated speaker. The 8 cm CD provides a smaller alternative to the normal 12 cm CD (although with a lower capacity). Miniature players exist that play only this format. Some portable CD players feature an externally-attached playback controller as depicted, to facilitate control while the main unit is placed in a bag or pocket.


Issues with recordable CDs

Some early portable CD players do not play recordable CDs (
CD-R CD-R (Compact disc-recordable) is a digital optical disc storage format. A CD-R disc is a compact disc that can be written once and read arbitrarily many times. CD-R discs (CD-Rs) are readable by most CD readers manufactured prior to the int ...
,
CD-RW CD-RW (Compact Disc-Rewritable) is a digital optical disc storage format introduced in 1997. A CD-RW compact disc (CD-RWs) can be written, read, erased, and re-written. CD-RWs, as opposed to CDs, require specialized readers that have sensi ...
) properly because of the way these CDs are recorded, and due to the significantly lower reflectivity of CD-RW. A consumer-recorded CD is recorded by making marks in a thin layer of organic dye, which leads to incompatibility with some CD players. For some users of CD-Rs, the solution to this is to burn the CD at a slower speed or use a different brand of recordable CDs. Burning at too slow a speed can also cause issues. Ideally, CD-Rs should be burned at half their rated maximum speed, for example, a CD-R with a maximum rating of 48x should be burned at 24x.


Future

Portable CD players are declining in popularity since the rise in popularity of
Portable media player A portable media player (PMP) (also including the related digital audio player (DAP)) is a portable consumer electronics device capable of storing and playing digital media such as audio, images, and video files. The data is typically stored o ...
s that play
digital audio Digital audio is a representation of sound recorded in, or converted into, digital form. In digital audio, the sound wave of the audio signal is typically encoded as numerical samples in a continuous sequence. For example, in CD audio, sampl ...
files including the iPod and smartphones. Before digital audio players became popular, many switched over to
MiniDisc MiniDisc (MD) is an erasable magneto-optical disc-based data storage format offering a capacity of 60, 74, and later, 80 minutes of digitized audio. Sony announced the MiniDisc in September 1992 and released it in November of that year for ...
as an alternative to CDs, due to the compact size of the MiniDisc format.Wallop, H
Portable CD players make a comeback
12-07-08.


See also

*
CD player A CD player is an electronic device that plays audio compact discs, which are a digital optical disc data storage format. CD players were first sold to consumers in 1982. CDs typically contain recordings of audio material such as music or audi ...
* Portable DVD Player *
Discman Discman was Sony's brand name for portable CD players. The first Discman, the Sony D-50 or D-5 (depending on region), was launched in 1984. The brand name changed to CD Walkman, initially for Japanese lineups launched between October 1997 and M ...
*
Walkman Walkman, stylised as , is a brand of portable audio players manufactured and marketed by Japanese technology company Sony since 1979. The original Walkman was a portable cassette player and its popularity made "walkman" an unofficial term f ...
* Personal stereo *
Portable audio player A portable audio player is a personal mobile device that allows the user to listen to recorded audio while mobile. Sometimes a distinction is made between a ''portable'' player, battery-powered and with one or more small loudspeakers, and a ''pers ...
*
Portable media player A portable media player (PMP) (also including the related digital audio player (DAP)) is a portable consumer electronics device capable of storing and playing digital media such as audio, images, and video files. The data is typically stored o ...


References

{{Compact disc navbox Consumer electronics Japanese inventions Portable audio players Portable media players Compact disc