Definição do conceito
[ENG] 33 1/3 rpm | Phonograph records are generally described by their diameter in inches (12-inch, 10-inch, 7-inch) (although they were designed in millimeters[7]), the rotational speed in revolutions per minute (rpm) at which they are played (8+1?3, 16+2?3, 33+1?3, 45, 78),[8] and their time capacity, determined by their diameter and speed (LP [long playing], 12-inch disc, 33+1?3 rpm; SP [single], 10-inch disc, 78 rpm, or 7-inch disc, 45 rpm; EP [extended play], 12-inch disc or 7-inch disc, 33+1?3 or 45 rpm); their reproductive quality, or level of fidelity (high-fidelity, orthophonic, full-range, etc.); and the number of audio channels (mono, stereo, quad, etc.). | SOURCE : Phonograph record. in: Wikipedia. Available at : https://en.wikipedia.org/wiki/Phonograph_record Accessed : 20 sep. 2022
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