Extreme crate-digging

This is really something. Patrick Feaster from the Media Preservation Initiative at the University of Indiana, has recreated the sound of one of the earliest known vinyl records, from a picture of the record. Here’s how it works:

“First, I take a high-resolution scan of the print and convert it from a spiral into a set of parallel lines through a polar-to-rectangular-coordinates transform. Next, I “cut” the individual lines and “paste” them end-to-end to create several long, narrow strips. After repairing any breaks in the line, I use a “paintbucket” tool to create two separate bands of varying width—one with the area below the line filled in white, the other with the area above the line filled in white.  Next, I run these images through ImageToSound, a program that converts them into WAV files as though they were variable-area optical film sound tracks.  Finally, I combine the paired WAV into stereo files, stitch the successive pieces together, sum to mono, and voilà—we have sound!”

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