Budley007
500+ Head-Fier
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- May 29, 2004
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I read an interesting article by Scott Wilkinson of Electronic Musician about a new process being developed for saving those old unusable shellac disk and wax cylinder recordings.
A couple of physicist at Lawrence Berkeley National Laboratory are developing an optical scanning procedure for extracting the audio information from old unusable disk. The disks in question could not be used with a stylus without suffering irreparable damage.
The initial test was a big success. The procedure involved using a computer controlled optical high resolution scanner to image small parts of the playing surface of a 1950s 78rpm shellac disk. The computer then "stitched" together all the information from each scan by analyzing the groove wiggles, deriving the stylus velocity and cleaning up any scratches, cracks or other spurious data. The final product is a 44.1kHz, 16-bit digital audio WAV file.
Electronic Musician, 11/2004 if anyone is interested.
A couple of physicist at Lawrence Berkeley National Laboratory are developing an optical scanning procedure for extracting the audio information from old unusable disk. The disks in question could not be used with a stylus without suffering irreparable damage.
The initial test was a big success. The procedure involved using a computer controlled optical high resolution scanner to image small parts of the playing surface of a 1950s 78rpm shellac disk. The computer then "stitched" together all the information from each scan by analyzing the groove wiggles, deriving the stylus velocity and cleaning up any scratches, cracks or other spurious data. The final product is a 44.1kHz, 16-bit digital audio WAV file.
Electronic Musician, 11/2004 if anyone is interested.
