Sound Information

The Economist writes about Dr. Feaster, an audio archaeologist of sorts, who has rendered into audio form one of the earliest recordings ever made. These recordings are of phonautograph by Édouard-Léon Scott de Martinville, which involved a pen’s movement along paper being controlled by air pressure waves moving through a horn. The result is an audio file of the earliest recording of a human voice!

He took an early form of analog-to-analog recording (sound pressure to pen-on-paper) which was a visual representation of the sound wave, and converted it back into an digital audio file that we can hear today.

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