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A portable media player (PMP) or digital audio player (DAP) is a portable consumer electronics device capable of storing and playing digital media such as audio, images, and video files.[1][2] Normally they refer to small, battery-powered devices utilising flash memory or a hard disk for storing various media files.[3][4] MP3 players has been a popular alternative name used for such devices, even if they also support other file formats and media types other than MP3 (for example AAC, FLAC, WMA).[5][6]
Generally speaking, PMPs are equipped with a 3.5 mm headphone jack which can be used for headphones or to connect to a boombox, home audio system, or connect to car audio and home stereos wired or via a wireless connection such as Bluetooth, and some may include radio tuners, voice recording and other features. In contrast, analogue portable audio players play music from non-digital media that use analogue media, such as cassette tapes or vinyl records. As devices became more advanced, the PMP term was later introduced to describe players with additional capabilities such as video playback (they used to also be called "MP4 players"). The PMP term has also been used as an umbrella name to describe any portable device for multimedia, including physical formats (such as portable CD players) or handheld game consoles with such capabilities.[7][8]
DAPs appeared in the late 1990s, following the creation of the MP3 codec in Germany. MP3-playing devices were mostly pioneered by South Korean startups, who by 2002 would control the majority of global sales.[9] However the industry would eventually be defined by the popular Apple iPod.[10] In 2006, 20% of Americans owned a PMP, a figure strongly driven by the young; more than half (54%) of American teens owned one, as did 30% of young adults aged 18 to 34.[11] In 2007, 210 million PMPs were sold worldwide, worth US$19.5 billion.[12] In 2008, video-enabled players would overtake audio-only players.[13] Increasing sales of smartphones and tablet computers have led to a decline in sales of PMPs,[14][15] leading to most manufacturers having exited the industry during the 2010s. Sony Walkman continues to be in production and portable DVD and BD players, which may be considered variations of PMPs, are still manufactured.[16]
Most support the patented MP3 codec, but not all. To call such players 'MP3 players' is not only confusing,... We suggest the terms 'digital audio player,' or simply 'audio player' if context permits.
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