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  2. Compact disc - Wikipedia

    en.wikipedia.org/wiki/Compact_disc

    The CD+G format takes advantage of the channels R through W. These six bits store the graphics information. CD + Extended Graphics (CD+EG, also known as CD+XG) is an improved variant of the Compact Disc + Graphics (CD+G) format. Like CD+G, CD+EG uses basic CD-ROM features to display text and video information in addition to the music being played.

  3. Compact disc manufacturing - Wikipedia

    en.wikipedia.org/wiki/Compact_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 manufactured to strict manufacturing tolerances for only a few US cents per disk.

  4. Longbox - Wikipedia

    en.wikipedia.org/wiki/Longbox

    Longbox packaging was phased out officially as of April 1, 1993, due to the controversy. At the same time, major retail stores were no longer selling vinyl records and had converted their displays to accommodate shrink-wrapped jewel cases, meeting the rising consumer demand for CDs while eliminating the need for longboxes. A further inducement ...

  5. Compact Disc Digital Audio - Wikipedia

    en.wikipedia.org/wiki/Compact_Disc_Digital_Audio

    By 1988, CD sales in the United States surpassed those of vinyl LPs, and, by 1992, CD sales surpassed those of prerecorded music-cassette tapes. [22] [23] The success of the compact disc has been credited to the cooperation between Philips and Sony, which together agreed upon and developed compatible hardware. The unified design of the compact ...

  6. Disc rot - Wikipedia

    en.wikipedia.org/wiki/Disc_rot

    Disc rot is the tendency of CD, DVD, or other optical discs to become unreadable because of chemical deterioration. The causes include oxidation of the reflective layer, reactions with contaminants, ultra-violet light damage, and de-bonding of the adhesive used to adhere the layers of the disc together.

  7. Mini CD - Wikipedia

    en.wikipedia.org/wiki/Mini_CD

    Mini CD-R, Mini CD-RW: As of 2020, many manufacturers offer 80 mm CD-R and CD-RW discs for sale in retail electronics and office supply stores. [citation needed] Most of the blank discs available in retail hold either 185 MB (21 minutes) or 210 MB (24 minutes) of data. The mini discs, despite having less weight and plastic, are generally more ...

  8. SPARS code - Wikipedia

    en.wikipedia.org/wiki/SPARS_code

    AAD is the SPARS code (highlighted in red) on Madonna's 1990 album, The Immaculate Collection. The SPARS code is a three-position alphabetic classification system developed in the early 1980s by the Society of Professional Audio Recording Services (SPARS) for commercial compact disc releases to denote aspects of the sound recording and reproduction process, distinguishing between the use of ...

  9. VinylDisc - Wikipedia

    en.wikipedia.org/wiki/VinylDisc

    The VinylDisc is a combination of a digital layer, either in CD or DVD format, and an analog layer, which is a vinyl record, developed by the German company Optimal Media Production. It consists of a silver layer containing CD or DVD and a black polyvinyl chloride layer (able to hold 3.5 minutes of audio on 33⅓ rpm) which can be played on a ...