Extracting Audio From Pictures (Summary) « media preservation
sound media historian Patrick Feaster has developed a method for extracting sound from these prints, bringing to life rare audio content thought lost to history. Feaster, who works for the campus Media Preservation Initiative, discovered one such print in an 1890 German periodical housed in the stacks at Indiana University Bloomington’s Wells Library. It represents the oldest gramophone-type recording available anywhere for listening today — the earliest audible ancestor of all of the world’s vintage vinyl.

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Source: http://mediapreservation.wordpress.com/2012/06/20/extracting-audio-from-pictures-summary/
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