He died in 1879, never knowing that his "visual text" would one day be heard by the world as the earliest recognizable recording of a human voice. The Unexpected Stories You Never Learned in School
: The recording revealed a haunting performance of the French folk song "Au Clair de la Lune." Initially, researchers thought it was a woman or child, but later realized it was Scott de Martinville's own voice played at the correct speed. 0gsw399jaqwagfppmdgui_source-UIHJpu5z.mp4
: Inspired by the anatomy of the human ear, Scott de Martinville built a device that used a speaking cone and a vibrating pin to etch sound waves onto paper covered in soot. He died in 1879, never knowing that his