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LP record. The LP (from "long playing" [ 1] or "long play") is an analog sound storage medium, specifically a phonograph record format characterized by: a speed of 33⁄ 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.
Three vinyl records of different formats, from left to right: a 12 inch LP, a 10 inch LP, a 7 inch single. A phonograph record (also known as a gramophone record, especially in British English), a vinyl record (for later varieties only), or simply a record or vinyl is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove.
LPs are universally packaged in paperboard covers with a paper (usually additional artwork, photography, and/or lyrics) or plastic liner (or "poly-lined" paper) protecting the delicate surface of the record. Few albums have had records packaged inside with a 3 mil polyethylene plastic sleeve, either square or round-bottomed (also called U ...
The most common diameter sizes for gramophone records are 12-inch, 10-inch, and 7-inch (300 mm, 250 mm, and 180 mm). [ 1] Early American shellac records were all 7-inch until 1901, when 10-inch records were introduced. 12-inch records joined them in 1903. [ 2] By 1910, other sizes were retired and nearly all discs were either 10-inch or 12-inch ...
A special section of a record store devoted to such items was known as the "cut-out bin" or bargain bin. [1] [2] As tapes and CDs supplanted LPs, the mechanisms for indicating a cut-out changed. On cassettes, a hole tended to be punched or burned through the case and through its printed insert. On CDs (a practice that continues today), a ...
Quadraphonic audio reproduction on vinyl phonograph records was problematic. As technologies advanced rapidly during the 1970s several different solutions were proposed to reproduce four channel sound from LPs. Some of these systems were much more successful than others. The simplest systems were "derived" (2–2–4) formats.
Data on vinyl album sales in the United States from 1993 to 2020 shows consistent growth since 2006, and in 2021 a total of 41.7 million vinyl albums were sold, up by over 50% from the previous ...
Original Master Recordings logo. In 1977, Mobile Fidelity began to produce a line of records known as "Original Master Recording" vinyl LPs. [7] These albums were previously released by other companies, licensed by Mobile Fidelity, and remastered using half-speed mastering from the original analog master tapes, without compression, and with minimal equalization. [8]
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