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vorbis
Vorbis is a free and open-source software project headed by the Xiph.Org Foundation (formerly Xiphophorus company). The project produces an audio coding format and software reference encoder/decoder (codec) for lossy audio compression. Vorbis is most commonly used in conjunction with the Ogg container format〔(【引用サイトリンク】 work =Xiph.org wiki )〕 and it is therefore often referred to as Ogg Vorbis.
Vorbis is a continuation of audio compression development started in 1993 by Chris Montgomery.〔(【引用サイトリンク】title= naming )〕 Intensive development began following a September 1998 letter from the Fraunhofer Society announcing plans to charge licensing fees for the MP3 audio format.〔(【引用サイトリンク】url = http://www.xiph.org/about/ )〕 The Vorbis project started as part of the Xiphophorus company's Ogg project (also known as OggSquish multimedia project). Chris Montgomery began work on the project and was assisted by a growing number of other developers. They continued refining the source code until the Vorbis file format was frozen for 1.0 in May 2000〔(【引用サイトリンク】url= http://www.xiph.org/vorbis/ )〕 and a stable version (1.0) of the reference software was released on July 19, 2002.
The Xiph.Org Foundation maintains a reference implementation, libvorbis. There are also some fine-tuned forks, most notably aoTuV, that offer better audio quality, particularly at low bitrates. These improvements are periodically merged back into the reference codebase.
==Name==
"Vorbis" is named after a ''Discworld'' character, Exquisitor Vorbis in ''Small Gods'' by Terry Pratchett.〔 The Ogg format, however, is ''not'' named after Nanny Ogg, another Discworld character; the name is in fact derived from ogging, jargon that arose in the computer game Netrek.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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