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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The basic parameters of the music single were established in the late 1800s, when the gramophone record began to supersede phonograph cylinders in commercial music. Gramophone discs were manufactured with a range of playback speeds and in several sizes. By around 1910, however, the 10-inch 78 rpm shellac disc had become the most commonly used format. The inherent technical limitations of the gramophone disc defined the standard format for commercial recordings in the…mehr

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The basic parameters of the music single were established in the late 1800s, when the gramophone record began to supersede phonograph cylinders in commercial music. Gramophone discs were manufactured with a range of playback speeds and in several sizes. By around 1910, however, the 10-inch 78 rpm shellac disc had become the most commonly used format. The inherent technical limitations of the gramophone disc defined the standard format for commercial recordings in the early 1900s. The relatively crude disc cutting techniques of the time and the thickness of the needles used on record players limited the number of grooves per inch that could be inscribed on the disc surface, and a high rotation speed was necessary to achieve acceptable recording and playback fidelity. 78 rpm was chosen as the standard because of the introduction of the electrically poweredsynchronous turntable motor in 1925, which ran at 3600 rpm with a 46:1 gear ratio, resulting in a rotation speed of 78.26 rpm.