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The playing time of a phonograph record is directly proportional to the available groove length divided by the turntable speed. Total groove length in turn depends on how closely the grooves are spaced, in addition to the record diameter. At the beginning of the 20th century, the early discs played for two minutes, the same as cylinder records ...
The discs were only six inches in diameter so recording time at 78rpm was brief. Larger size Victor blanks were introduced late in 1931, when RCA-Victor introduced the Radiola-Electrola RE-57. These machines were capable of recording at 33 1 ⁄ 3 rpm as well as 78 rpm.
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.
Phonograph cylinders (also referred to as Edison cylinders after its creator Thomas Edison) are the earliest commercial medium for recording and reproducing sound.Commonly known simply as "records" in their heyday (c. 1896–1916), a name which has been passed on to their disc-shaped successor, these hollow cylindrical objects have an audio recording engraved on the outside surface which can ...
A phonograph, later called a gramophone (as a trademark since 1887, as a generic name in the UK since 1910), and since the 1940s a record player, or more recently a turntable, is a device for the mechanical and analogue reproduction of sound.
A Seeburg Background Music record is a vinyl record of a non-standard 9 inch (23 cm)-diameter size with a 2-inch (5 cm) center hole. The recording is monaural, with a playing speed of 16⅔ rpm and a density of 420 grooves per inch. [2] A 0.5 mil diamond stylus is used for reproduction.
The company was originally named Empire Phonograph Corporation, but changed their name to Domino Phonograph Corporation in 1915, [1] apparently before producing any products. The label debuted June 1916. [2] They produced two-sided, 7-inch fine-groove vertical-cut disc records with a light-blue label and dark-blue lettering.
It essentially amounted to playing a phonograph record, but one that was recorded with the best electrical technology of the time. Audiences used to acoustic phonographs and recordings would, in the theatre, have heard something resembling 1950s high fidelity.