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jan 1, 1857 - Phonautograph

Description:

In 1857, the Phonautograph was invented. The Phonautograph is the earlies known device for recording sound. It was invented by Édouard-Léon Scott de Martinville who used it in an experiment so that he could see sound.

Added to timeline:

Date:

jan 1, 1857
Now
~ 168 years ago

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