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.
phonograph,
invention,
Thomas
Edison,
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telephone,
recording
sound,
playback,
hearing,
audio,
signal
Channels:
1910s
Technology
Added: 589 days ago by
bryan
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