1 янв 1931 г. - LP Columbia

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The LP (abbreviation for "long play" / "long playing") is an analog sound storage medium, a vinyl record format characterized by a speed of  33 1⁄3 rotations per minute, a 12 or 10 inch (30 or 25 cm) diameter, and use of the "microgroove" groove specification. Introduced by Columbia in 1948, it was soon adopted as a new standard by the entire record industry.

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20 фев 2018

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Recording Technology in History

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