Some kinds of audio restoration are on pretty firm ground these days: declicking and decrackling, for instance, or noise reduction. But speed variance correction—the removal of wow and flutter—remains an extraordinarily daunting challenge. 3,220 more words
Tags » Phonautograph
You probably know that the phonautograms of Édouard-Léon Scott de Martinville are the world’s oldest records of airborne sound, and that we can play them back today as audio. 1,497 more words
This 1860 phonautogram by Édouard-Léon Scott de Martinville is the first known sound recording with a human voice.
Sounds a little scary. But when he recorded his phonautograms, he didn’t expect that once they would be played back, because the phonograph was only invented in 1877, by… 67 more words
In 1859, a wealthy Philadelphia merchant named Charles N. Bancker bought a phonautograph for his lavish private collection of scientific apparatus. It may have been the first phonautograph ever sold, and perhaps even the first one professionally built. 6,074 more words