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,
telegraph,
telephone,
recording
sound,
playback,
hearing,
audio,
signal
Channels:
1910s
Technology
Added: 587 days ago by
bryan
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