I'm hoping someone can help me with a little problem. The BBC in their infinite wisdom have decided to screen young indiana jones on monday and tuesday afternoons at 1:30pm, unfortunately I'm back at uni now, so although I managed to grab six or so of them over the last few weeks (missed Phantom Train of doom! urggh!), I had to schedule a capture for one and its messed up.

The capture captured at the correct time, although some annoying sound distortion has appeared. Normally I do a test capture, and this distortion does happen sometimes. Its kind of like clicking about the sound that's being played ie. seems linked in with the actual sound. Normally, I just unplug my DV bridge, and then replug in, fire it up and then all is well, but I didn't have this option yesterday obviously.

Anyway, so now I have a 19GB capture, of which 0.95GB of it is PCM wav stream, underneath the distortion you can hear the audio fine, there doesn't seem to be a problem with it, but obviously now I need to get rid of this bloody audio noise. I think it might be to do with perhaps a dropped frame at the begining or somewhere along the broadcast, or at least maybe the BBC dropped the feed somewhere along the day when it was sit doing nothing. There were no problems with the video I saw anyway and it reported no dropped frames.

Anyway, I need to remove this sound problem and I have no clue how I can do this. Without it I got 20GB of junk essentially.

Here's a sample (rared it up since its 2mb -> 1.29mb):
http://members.lycos.co.uk/leagueofsubs/
(click then click indy sound, they don't like remote linking)

what software you using , capture devise u using, what codec u using

and what resoltuion u capturing at

Full PAL res, Pinnacle DVsoft codec, WinDV.

Just to clear things up, the problem isn't the capture process or anything , my problem is I have a WAV file and need to remove noise from (listen to the sample). I'm crap at audio processing and have very little knowledge beyond basic speech recognition, fourier transform techniques and a bit in between, but I'd imagine there is a program somewhere that will perform a mathematical calculation to remove the noise from the wav. You ever heard of any?


I posted on doom9 and no one even bothered replying, which I was suprised at since I consider them the encoding geeks

So any of you guys know of audio processing or noise removal tools? or of a audio processing enthusiast site?

Cool Edit Pro can do amazing things with sound files, unfortunatelly I haven't used it for qute a time

the thing i use for bad audio sometimes is goldwave can remove hiss and hum and snap and pops and other stuff like that

okay thanks, the only audio processing tool I've used was Matlab, and that's not even an audio tool (you can just run maths function).

I think the sound problem is called "digital clicks". I'll download both those programs and report back, thanks.

As said, the sound underneath it is really pretty clear (ie not muffled or anything), so hopefully it will be simple threholding.

I might try deconvolution, or maybe I could see if it can be fixed in the frequency domain, but I really don't know too much about him.