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A twelve-inch Capitol Records gramophone record. The twelve-inch single (often written as 12-inch or 12″) is a type of vinyl (polyvinyl chloride or PVC) gramophone record that has wider groove spacing and shorter playing time with a "single" or a few related sound tracks on each surface, compared to LPs (long play) which have several songs on each side.
Phonoscène - 16-inch discs were used, but also 12-inch and 10-inch discs, [8] as part of an early sound-film system made by Léon Gaumont. The discs were synchronised to a motion picture film, and were played on a Chronophone.
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) or a vinyl record (for later varieties only) is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove.
The new product was a 12- or 10-inch (30 or 25 cm) fine-grooved disc made of PVC ("vinyl") and played with a smaller-tipped "microgroove" stylus at a speed of 33 + 1 ⁄ 3 rpm. Each side of a 12-inch LP could play for about 25 minutes, allowing for a total runtime of approximately 50 minutes. [9]
However, some very early (c. 1928–1931) radio programs were on sets of 12-inch or even 10-inch (25 cm) 78 rpm discs, and some later (circa 1960–1990) syndicated radio programs were distributed on 12-inch 33 + 1 ⁄ 3 rpm microgroove vinyl discs visually indistinguishable from ordinary records except by their label information.
Its diameter typically spans 30 cm (12 in). Unlike most optical-disc standards, ... Pioneer CLD-1010, first player capable of playing 5-inch (130 mm) CD-Video discs ...
After World War I, Emerson began an ambitious expansion of the business, and in 1919 added a line of industry standard 10-inch discs for 85 cents and increased to one dollar the following year. In 1919 Emerson introduced 12-inch discs, mostly of classical music, for US$1.25.
In 1926, an attempt at reviving interest in Edison records was made by introducing a long-playing Diamond Disc which still rotated at 80 rpm but tripled the standard groove pitch to 450 threads per inch by using an ultra-fine groove, achieving a playing time of 24 minutes per 10-inch disc (12 on each side) and 40 minutes per 12-inch disc (these ...