Inventions History Machines
A phonograph, in its later forms also called a gramophone (as a trademark since 1887, as a generic name in the UK since 1910) or since the 1940s called a record player, is a device for the mechanical recording and reproduction of sound. The sound vibration waveforms are recorded as corresponding physical deviations of a spiral groove engraved, etched, incised, or impressed into the surface of a rotating cylinder or disc, called a "record". To recreate the sound, the surface is similarly rotated while a playback stylus traces the groove and is therefore vibrated by it, very faintly reproducing the recorded sound. In early acoustic phonographs, the stylus vibrated a diaphragm which produced sound waves which were coupled to the open air through a flaring horn, or directly to the listener's ears through stethoscope-type earphones.
The phonograph was invented in 1877 by Thomas Edison. Alexander Graham Bell's Volta Laboratory made several improvements in the 1880s and introduced the graphophone, including the use of wax-coated cardboard cylinders and a cutting stylus that moved from side to side in a zigzag groove around the record. In the 1890s, Emile Berliner initiated the transition from phonograph cylinders to flat discs with a spiral groove running from the periphery to near the center, coining the term gramophone for disc record players, which is predominantly used in many languages. Later improvements through the years included modifications to the turntable and its drive system, the stylus or needle, and the sound and equalization systems.
The disc phonograph record was the dominant audio recording format throughout most of the 20th century. In the 1980s, phonograph use on a standard record player declined sharply due to the rise of the cassette tape, compact disc, and other digital recording formats. However, records are still a favorite format for some audiophiles, DJs and turntablists (particularly in hip hop and electronic dance music), and have undergone a revival since the 1990s. The original recordings of musicians, which may have been recorded on tape or digital methods, are sometimes re-issued on vinyl.
Several inventors devised machines to record sound prior to Thomas Edison's phonograph, Edison being the first to invent a device that could both record and reproduce sound. The phonograph's predecessors include Édouard-Léon Scott de Martinville's phonautograph, and Charles Cros's paleophone. Recordings made with the phonautograph were intended to be visual representations of the sound, but were never sonically reproduced until 2008. Cros's paleophone was intended to both record and reproduce sound but had not been developed beyond a basic concept at the time of Edison's successful demonstration of the Phonograph in 1877. More details
The disc phonograph record was the dominant audio recording format throughout most of the 20th century. In the 1980s, phonograph use on a standard record player declined sharply due to the rise of the cassette tape, compact disc, and other digital recording formats. However, records are still a favorite format for some audiophiles, DJs and turntablists (particularly in hip hop and electronic dance music), and have undergone a revival since the 1990s. The original recordings of musicians, which may have been recorded on tape or digital methods, are sometimes re-issued on vinyl.
Several inventors devised machines to record sound prior to Thomas Edison's phonograph, Edison being the first to invent a device that could both record and reproduce sound. The phonograph's predecessors include Édouard-Léon Scott de Martinville's phonautograph, and Charles Cros's paleophone. Recordings made with the phonautograph were intended to be visual representations of the sound, but were never sonically reproduced until 2008. Cros's paleophone was intended to both record and reproduce sound but had not been developed beyond a basic concept at the time of Edison's successful demonstration of the Phonograph in 1877. More details
