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MP3 (formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) [4] is a coding format for digital audio developed largely by the Fraunhofer Society in Germany under the lead of Karlheinz Brandenburg, [11][12] with support from other digital scientists in other countries. Originally defined as the third audio format of the MPEG-1 standard, it was retained and further extended—defining ...
Digital audio players (DAP) were often marketed as MP3 players even if they also supported other file formats and media types. [3][4] The PMP term was introduced later for devices that had additional capabilities such as video playback. Generally speaking, they are portable, employing internal or replaceable batteries, equipped with a 3.5 mm headphone jack which can be used for headphones or ...
Timeline of audio formats An audio format is a medium for sound recording and reproduction. The term is applied to both the physical recording media and the recording formats of the audio content —in computer science it is often limited to the audio file format, but its wider use usually refers to the physical method used to store the data. Note on the use of analog compared to digital in ...
Portable audio player. A personal mono device as science fiction (Albert Robida, 1894) 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 personal player ...
Karlheinz Brandenburg. Karlheinz Brandenburg (born 20 June 1954) is a German electrical engineer and mathematician. [1] Together with Ernst Eberlein, Heinz Gerhäuser (former Institutes Director of Fraunhofer IIS), Bernhard Grill, Jürgen Herre and Harald Popp (all Fraunhofer IIS), he developed the widespread MP3 method for audio data compression.
Vehicle audio is equipment installed in a car or other vehicle to provide in-car entertainment and information for the occupants. Until the 1950s, it consisted of a simple AM radio. Additions since then have included FM radio (1952), 8-track tape players, cassette players, record players, CD players, DVD players, Blu-ray players, navigation systems, Bluetooth telephone integration and audio ...
Many pioneering attempts to record and reproduce sound were made during the latter half of the 19th century – notably Édouard-Léon Scott de Martinville 's phonautograph of 1857 – and these efforts culminated in the invention of the phonograph by Thomas Edison in 1877. Digital recording emerged in the late 20th century and has since ...
The following is a partial list of Sony Walkman products which includes products of various formats under the brand. Up to March 2010 Sony built 400 million Walkmans (of which slightly over half - 200.02 million - were original cassette Walkmans) worldwide. [1]