Tuesday, June 23, 2009
Interesting article on record preservation efforts at the Library of Congress from the NPR site...
Morning Edition, July 16, 2007 · At the Library of Congress, in a small, white room with bright red carpet, physicist Carl Haber sits down to play a record from 1930. It's a recording of Gilbert and Sullivan's "Iolanthe." But here's the strange thing: This record is broken.
"It looks like somebody just got hungry and took a bite out of it," says Haber. He has positioned the record on a turntable and fitted the broken piece back into place, like it's a jigsaw puzzle. "If we spun this thing fast, the piece would come flying off, you know, and maybe hit somebody," he says.
But this turntable doesn't spin like a normal record player. And there's no needle hovering over the record. Instead, there's a camera linked to a computer. It snaps detailed images of the groove cut into the disc, and uses the images to reconstruct the sound without ever touching the record.
article continues here