On Thu, Feb 20, 2020 at 11:06:52AM -0600, Bill Gee wrote:
> On Thursday, February 20, 2020 10:54:02 AM CST Fred Smith wrote:
> > Hi!
> >
> > totally OT...
> >
> > Hoping there is a mailing list or wiki (or other help forum)
> > for GWC, but haven't found one yet.
> >
> > I'm working on converting a bunch of my LPs to CDs, and am using
> > GWC (Gnome Wave Cleaner, or GTK Wave Cleaner) to clean up the noise.
> > It works great, but I can't figure out how to deal with certain types
> > of pressing flaws that create a thump every time around.
> >
> > Anyone know of such a resource?
> >
> > Thanks in advance!
> >
> > Fred
> >
>
>
> I tried to respond directly to Fred, but got bounced. Hence replying to the list even though, as Fred notes, this is WAY off topic.
>
>
>
> Wow, does that still exist? I gave up on it YEARS ago. Audacity is far better at removing clicks and pops, splitting into tracks and exporting to FLAC. It also does a great job removing tape hiss.
yes, it still exists. looks like it gets occasionial maintenance.
Audacity is a great tool, but (according to stuff I've read on the
mailing list/wiki) its noise reduction tool is broken. Using GWC, If
I take a few samples of lead-in and/or inter-track "silence" and apply
it as a noise reduction filter I get an amazing improvement in playback
noise, even on a clean lightly-played disk.
I've used both tools for click removal and they both seem to work well.
Mostly, I select just the click and minimal space around it and GWC does
a great job. (of course, if it's a really noisy old LP then you'd need
to run the click filter on the whole thing, but so far the ones I've
converted, while being years old, have only been played a handful of
times and so sound pretty good with minimal clicks to remove and little
distortion due to dirt or wear. I'll eventually get to some of the older
ones though, then I"ll need to work harder! :)
>
>
>
> As for removing thumps - No way I know of to do that. Audacity might be able to reduce the thump by using a high-pass filter set to roll off at 30 or 40 hz, but I don't think it can be taken completely out.
Yeah, I've thought of a high pass filter, or a notch filter, but haven't
(yet) tried it.
Thanks for the response, Bill!
Fred
--
---- Fred Smith -- fredex@xxxxxxxxxxxxxxxxxxxxxx -----------------------------
I can do all things through Christ
who strengthens me.
------------------------------ Philippians 4:13 -------------------------------
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