TODAY'S HISTORY OF THE DAY
History: April 9 (#2)
April 9, 1860
On his phonautograph machine, Édouard-Léon Scott de Martinville makes the first known recording of an audible human voice.
April 9, 1860
On his phonautograph machine, Édouard-Léon Scott de Martinville makes the first known recording of an audible human voice.
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