Digital Preservation of Analog Sound Recordings
Very cool.
Library of Congress Blog » Good Night, IRENE: Technology of Dreams (Library of Congress)
IRENE makes a high-resolution digital image of a disc record. The key is found in creating a digital audio file from the analog information in the disc’s grooves. IRENE can efficiently extract sound from an image of a fragile or damaged disc, “heal” scratches or digitally “reassemble” a broken phonograph record. The extracted sound is converted to standard digital files and stored for purposes of digital access and preservation.

