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{{Short description|Audio compression codec}}
{{Unreferenced|date=April 2010}}

The '''cook codec''' is a [[Lossy data compression|lossy]] [[Audio data compression|audio compression]] [[codec]] developed by [[RealNetworks]]. It is also known as Cooker, Gecko, RealAudio G2, and RealAudio 8 low bitrate (RA8LBR).

Introduced in 1998, the cook codec was the first audio codec developed by RealNetworks in-house, and was named after its author, Ken Cooke. It is a pure transform codec based on the [[modified discrete cosine transform]] with a single block size.

In 2003, RealNetworks introduced a [[surround sound]] version of cook, called RealAudio Multichannel. This was initially designated by the four-character code 'whrl', but is now identified as 'cook', as mono/stereo files are.

Although RealNetworks never published a technical description of the cook codec, others have [[Reverse engineering|reverse engineered]] the format, and as of December 2005, [[FFmpeg]] [[libavcodec]] contains a decoder capable of playing cook-encoded files. As of July 2009, [[Rockbox]] is capable of playing cook-encoded files as well.

==See also==
*[[RealAudio]]

[[Category:Audio codecs]]
[[Category:RealNetworks]]

{{Sound-tech-stub}}

Cook Codec - Revision history

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