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MP3-history.com Archived 11 February 2020 at the Wayback Machine, The Story of MP3: How MP3 was invented, by Fraunhofer IIS. MP3 News Archive. Archived 3 March 2019 at the Wayback Machine – over 1000 articles from 1999 to 2011 focused on MP3 and digital audio. MPEG.chiariglione.org Archived 10 April 2024 at the Wayback Machine – MPEG ...
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.
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.
The book chronicles the invention of the MP3 format for audio information, detailing the efforts by researchers such as Karlheinz Brandenburg, Bernhard Grill and Harald Popp to analyze human hearing and successfully compress songs in a form that can be easily transmitted.
The development of the MP3 audio file format, and legal issues involved in copying such files, has driven most of the innovation in music distribution since their introduction in the late 1990s. As hard disk capacities and computer CPU speeds increased at the end of the 1990s, hard disk recording became more popular.
There is a trade-off between size and sound quality of lossily compressed files; most formats allow different combinations—e.g., MP3 files may use between 32 (worst), 128 (reasonable) and 320 (best) kilobits per second. [67] There are also royalty-free lossy formats like Vorbis for general music and Speex and Opus used for voice recordings.
An audio coding format [1] (or sometimes audio compression format) is a content representation format for storage or transmission of digital audio (such as in digital television, digital radio and in audio and video files). Examples of audio coding formats include MP3, AAC, Vorbis, FLAC, and Opus.
MPEG Audio Layer II is the core algorithm of the MP3 standards. All psychoacoustical characteristics and frame format structures of the MP3 format are derived from the basic MP2 algorithm and format. The MP2 encoder may exploit inter channel redundancies using optional "joint stereo" intensity encoding.