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Invention of the Phonograph

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Added on Oct 14, 2011

Length: 02:28 | Comments: 0

Thomas Alva Edison conceived the principle of recording and reproducing sound between May and July 1877 as a byproduct of his efforts to "play back" recorded telegraph messages and to automate speech sounds for transmission by telephone.

The result was this invention, the Phonograph.

Channels: 1910s   Technology  

Tags: phonograph,  invention,  Thomas  Edison,  telegraph,  telephone,  recording  sound,  playback,  hearing,  audio,  signal 

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