BBC3 年
Edison was not the first to record the human voice...
In 1877, Thomas Alva Edison (1847 – 1931) invented the tin foil phonograph – a machine that recorded sound by indenting a sheet of tin foil into a groove in a cylinder. A later wax version was ...
PBS6 年
The Phonograph
On December 7, 1877 Thomas Edison demonstrated his phonograph at the New York City offices of the nation's leading technical weekly publication, Scientific American. The following report set off ...