Filtering the output sound

[Guest]

I have connected a fairly old pickup on the line in port of my sound card. The thing is some vinyl discs are a bit scratched, and that causes unwanted, parasitic sound. I wonder if there are any applications that detects this unwanted sounds, and filters them so the output sound would be a little better ?

 

[americanaudiophile]

You should not connect a turntable directly to the line level input of your soundcard unless the turntable has a built in phono preamp or you are using LP ripping software that can apply the RIAA eq that is required for LP playback.
For removing unwanted noise you can use Audacity which has facilities to do this and is freeware
http/manual.audacityteam.org/index.php?title=Sample_workflow_for_LP_digitization
A program just for LP ripping is Vinyl Studio
http/www.alpinesoft.co.uk/VinylStudio/home.aspx
and it has cleanup functions too. A bit more automated than Audacity but not free.
If you want to create a high quality file use a sampling rate as high as your soundcard will allow. You can always make lower quality files for portable use.