Re: Noise reduction

["Richard's BT a/c" richard6054]

Optical scanning comes into its own with valuable recordings that are
unplayable mechanically, as used recently by the British Library and
Southampton University for the recovery of 130-year old tinfoil recording:
http://soundresources.ning.com/profiles/blogs/recovery-of-130year-old

Further research is needed to more fully deploy image processing as a means=

of noise reduction of scanned images. This will be particularly effective i=
n
reducing thumps and crackles caused by dirt particles and scratches that
during conventional contact replay with styli create 'shadows' due to
mechanical resonances.

Richard Ranft
The British Library Sound Archive