|
Authored by: Anonymous on Saturday, December 08 2012 @ 05:42 PM EST |
It's possible to "play" 78s optically - with no physical stylus, and resulting
in no wear or other damage to the disc. As described in the relevant
Wikipedia article:
As an alternative to playback with a stylus,
a recording can be read optically, processed with software that calculates the
velocity that the stylus would be moving in the mapped grooves and converted to
a digital recording format. This does no further damage to the disc and
generally produces a better sound than normal playback. This technique also has
the potential to allow for reconstruction of damaged or broken
disks.
The WP article here references a 2003 Journal of the
Audio Engineering Society article by two scientists from Lawrence Berkeley
National Laboratories (probably better known for their high-energy research and
as the namesake of synthesized trans-uranic elements like Californium,
Lawrencium. and Berkelium). I suspect that this technique requires equipment and
data-processing not available to most amateurs, although I also suspect that one
could do a fair-to-middlin' job at home, using a high-resolution scan of a 78rpm
disc and sufficiently flexible image-processing software.[ Reply to This | Parent | # ]
|
|
|
|
|