There's a command-line Linux program named gramofile - http://www.opensourcepartners.nl/~costar/gramofile/ - that is designed to remove clicks and pops from recordings. It's mostly designed to work with older tapes and vinyl records, but it does have click removal filters. I used it in a 3-step process, with some vinyl recordings from the late 1950's that were "well loved", with a lot of pops and general distortion. (Recordings of a high-school choir - I did the cleanup for a member of the choir.) Phase One - transfer it to digital files on your PC Phase Two - run it through one or more of the gramofile filters. That should take care of most of the clicks Phase Three - Bring it into an audio editor like Audacity for some hand cleanup, if there are any clicks that were missed. If you zoom in on the wave form, the clicks should stand out like spikes. You might also want to tweak the eq, depending on the recording. On the vinyl tracks I cleaned up, most of the worst of the static was in a different eq range than the music, so by adjusting eq I could filter almost all of it out. End result for me, was that some old, almost unlistenable vinyl records ended up a listenable CD. I hope this helps. Charlie Message: 2 > Date: Sun, 22 Apr 2007 12:13:31 -0500 > From: Jon Schewe <jpschewe at mtu.net> > Subject: [tclug-list] Need some audio help > To: tclug-list at mn-linux.org > Message-ID: <1177262011.2689.13.camel at jon.mn.mtu.net> > Content-Type: text/plain; charset="us-ascii" > > I'm hoping someone on the list has some experience with this or knows > where to look. > > I've got a tape recording where a tape player was used that clicks bad. > So the recording I want appears to be on the tape very quietly, however > the clicking is so loud because the internal mic on the recorder was > used. Does anyone have a good idea on how to remove these clicks? > > An example of the recording can be found at > http://mtu.net/~jpschewe/remove_clicks.flac > > Any help would be appreciated. The recording is of a memorial service > and I have someone that was unable to be there that I'd really like to > get a copy to. Thanks. > > > ________________________________________________________________________ > > Jon Schewe | http://mtu.net/~jpschewe > Help Jen and I fight cancer by donating to the Leukemia & Lymphomia > Society > Here's our website: http://www.active.com/donate/tntmn/tntmnJSchewe > If you see an attachment named signature.asc, this is my digital > signature. > See http://www.gnupg.org for more information. > -------------- next part -------------- > A non-text attachment was scrubbed... > Name: not available > Type: application/pgp-signature > Size: 189 bytes > Desc: This is a digitally signed message part > Url : > http://mailman.mn-linux.org/pipermail/tclug-list/attachments/20070422/5a58baf9/attachment-0001.pgp > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://mailman.mn-linux.org/pipermail/tclug-list/attachments/20070422/9a82a201/attachment.htm