Édouard-Léon Scott de Martinville (1817-1879) was a French printer and bookseller who lived in Paris. He invented the earliest known sound recording device, the phonautograph, which was patented [in 1857].
In 2008, the New York Times reported the discovery of a phonautogram from April 9, 1860. The announcement of the discovery was accompanied by an announcement that the visual recording was made playable — "converted from squiggles on paper to sound — by scientists at the Lawrence Berkeley National Laboratory in Berkeley, California."
The phonautogram was one of Leon Scott's forgotten images in Paris; they were scanned then processed by a sophisticated computer program developed a few years earlier by the Library of Congress. The recording was a ten-second snippet of a singer, probably a daughter of the inventor performing the French folk song "Au Clair de la Lune". This phonautograph recording is now the earliest known recording of a human voice and the earliest known recording of music in existence. -- Wikipedia