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The new deal retained a revised version of the BMG Direct model called the "Preferred Buyers Club", offering a 20% discount for club-edition records; all other music was sold at standard Amazon prices. [19] In 2011, the CDnow.com URL was redirected to a maintenance notice, [20] and in 2013, it was permanently taken offline.
The logical format of an audio CD (officially Compact Disc Digital Audio or CD-DA) is described in a document produced in 1980 by the format's joint creators, Sony and Philips. [91] The document is known colloquially as the Red Book CD-DA after the color of its cover.
Compact Disc Digital Audio (CDDA or CD-DA), also known as Digital Audio Compact Disc or simply as Audio CD, is the standard format for audio compact discs. The standard is defined in the Red Book technical specifications , which is why the format is also dubbed "Redbook audio" in some contexts. [ 1 ]
Columbia Record Club was formed in 1955 by CBS/Columbia Records as an experiment to market music directly by mail, [5] spurring sales to rural consumers and heading off competition from mail-order companies from outside the record industry. [6] New members to the club were enticed with a free record just for joining. [5]
The dye materials developed by Taiyo Yuden made it possible for CD-R discs to be compatible with Audio CD and CD-ROM discs. In the United States, there is a market separation between "music" CD-Rs and "data" CD-Rs, the former being notably more expensive than the latter due to industry copyright arrangements with the RIAA. [3]
DVDs and Blu-rays use similar methods (see Optical Disc § Optical disc manufacturing). A CD can be used to store audio, video, and data in various standardized formats defined in the Rainbow Books. CDs are usually manufactured in a class 100 (ISO 5) or better clean room, to avoid contamination which would result in data corruption. They can be ...
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