On 11/06/03, James L Wolf wrote: > Don, > > I gather from Michael's post that this digital fix won't remove the > vertically read surface noise picked up by the stereo wired cartridge. > I'm curious about what the professional remastering people on the > list do when faced with early mono-LPs and 78s. Transferring stereo > seems to offer better impulse noise reduction possibilities, while > tranferring with a cartridge wired for lateral-only, and thus mono > only, reduces surface noise. What pros and cons go into deciding which > cartridge to use? Mixing the two channels gives a 40% reduction in noise. Cedar and similar software can remove individual clicks completely. I would think that it would be easier to detect the clicks if they were _not_ reduced by mixing the channels. The logical strategy, to me, would be to first declick the two channels, and then mix them. But for listening to 78 rpm originals, I normally just listen straight, noise and all. The brain can concentrate on the music so long as the speakers have a good transient response. For an archive, it seems sensible to store a stereo signal, unprocessed, as well as any kind of processed version you might make, because we can be sure that software will improve in the future. Regards -- Don Cox [log in to unmask]