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Vinyl, acetate, and shellac discs being exposed to soil and fungus spores. Library of Congress Study, 1959. The conservation and restoration of vinyl discs refers to the preventive measures taken to defend against damage and slow degradation, and to maintain fidelity of singles, 12" singles, EP’s, and LP’s in 45 or 33⅓ rpm 10" disc ...
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Vinyl data is the use of vinyl discs to store sequenced/encoded data rather than for simple analog recordings.This alternate use of the storage medium enabled the code of full motion videos (FMVs) and even simple video games to be stored in an analog format along with the soundtrack and sound effects.
The LP (from long playing [2] or long play) is an analog sound storage medium, specifically a phonograph record format characterized by: a speed of 33 + 1 ⁄ 3 rpm; a 12- or 10-inch (30- or 25-cm) diameter; use of the "microgroove" groove specification; and a vinyl (a copolymer of vinyl chloride acetate) composition disk.
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The introduction of both the 33 1 ⁄ 3 rpm, 12-inch LP record and the 45rpm, 7-inch record, coming into the market in 1948/1949, provided advances in both storage and quality. These records featured vinyl ( polyvinyl chloride or polystyrene ), replacing the previous shellac materials.