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The rotational speed varied somewhat from one manufacturer to another, but most turned at between 75 and 80 revolutions per minute and most 'Gramophone' machines were capable of some adjustment. Eventually 78 rpm became the common standard.
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However, it's not unusual for history to get things "twisted"....... Jean-Paul Agnard suggested the following scenario.... A possibility exists that Edison himself in fact, might not have been the very first person to ... The name "Dictaphone" trademark was originally registered by the Columbia Gramophone Company in 1907.
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The gramophone, patented by Emile Berliner in 1887, overcame the groove weakness problems encountered by Tainter through the use of a mastering process. The groove was first cut into a wax disc whose pattern was acid etched into a zinc record. ... CED in the History of Media Technology...
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The First World War was a turning point in Canadian history. It was also an important era in the development of the music and recording industries in Canada. ... Visitors to the Virtual Gramophone website can consult 1500 cataloguing records in the database, and 350 digitally-restored audio recordings,
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The history of recorded sound in Canada can be said to have begun on May 17, 1878 with a demonstration of Edison's recently invented talking machine, the phonograph, at the Governor-General's residence in Ottawa. ... The money enabled Berliner to devote himself exclusively to the creation of the gramophone.
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A History of the Gramophone Record ... The first records were on cylinders, the earliest of which were made by the inventor of the first 'Phonograph', ... The name 'Gramophone' began as a Trademark for Berliner's new invention, but Europeans adopted it as generic while Americans continued to use the term 'Phonograph'.
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Gramophone record - Wikipedia, the free encyclopedia
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