![]() By running the needle over these grooves, one could play back the recording by reversing the process: from grooves to needle to a diaphragm that would translate the sound back into waves that one could hear through the horn. A person could talk, sing or play an instrument into a cone-shaped horn, which would translate the sound waves onto a diaphragm this diaphragm was attached to a needle that would inscribe the sound waves as grooves onto the rotating tinfoil cylinder. ![]() ![]() In 1877, Edison developed a way of recording sound waves on a tinfoil cylinder. When John Lomax first began collecting folksongs, there was only one way of capturing sound - the wax cylinder phonograph, invented by Thomas A. Left: Wax cylinder phonograph and portrait of Jesse Walter Fewkes.
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