Cleaning sound

[Amadeus]

I have a video clip that I want to extract the sound from and use as a ring/message tone. However, there is quite a lot of noise (background as opposed to white) in it - is there any way that it can be cleaned up?
I've no idea how it would work so I think the answer is probably "no".

thanks

[Spank86]

Yes and no, you can remove so e extraneous sounds on different frequencies but I'm not aware of a way to do so if they are on the same frequency as the sound you wish to keep.

[Fallout]

It's a science, but it's possible. What you need is an inverted version of the waveform that you consider noise and then add it to create negative interference. e.g. if you have a version of a song with and without lyrics, you could invert the waveform without lyrics and apply it to the waveform with lyrics to get the lyrics by themselves (in simple terms). So if the 'background sound' exists identically by itself somewhere else in the recording, you could remove it from the bit you want. Realistically though, the sounds are rarely identical making this imperfect at best.

So basically, no. You can't do it.

[tinpants]

Have a chat with Bear (if he's still around on here?) He's a professional sound engineer/recordist for various tv programmes and companies. I'm sure he'd be able to help.

[Amadeus]

Thanks guys; I didn't think it would be straight forward - I won't bother Mr Bear with it - it's only johnny rotten saying "ever get the feeling you've been cheated?" :-)

[Jammy]

It's a science, but it's possible. What you need is an inverted version of the waveform that you consider noise and then add it to create negative interference. e.g. if you have a version of a song with and without lyrics, you could invert the waveform without lyrics and apply it to the waveform with lyrics to get the lyrics by themselves (in simple terms). So if the 'background sound' exists identically by itself somewhere else in the recording, you could remove it from the bit you want. Realistically though, the sounds are rarely identical making this imperfect at best.

So basically, no. You can't do it.

(2)

You can do it on programs like Logic, Ableton, Soundforge (maybe) but alas its never 100%. I've used acapellas before that have been cut from songs in this way and you can still hear alot of music.

[Spank86]

Just listened to it on YouTube, it might be doable, there's not THAT much background noise and presumably it doesn't need to be perfect.

[Amadeus]

Just listened to it on YouTube, it might be doable, there's not THAT much background noise and presumably it doesn't need to be perfect.

The difficulty is finding the inverse to apply isn't it? Not sure what one would use for that?

[Spank86]

Sections from before and after (and possibly in between).

Don't have a PC here to have a play unfortunately.

[Fallout]

Where's the clip? I'll have a ganders tomorrow and see what the dealio is! :)

[embee]

Audacity (http://audacity.sourceforge.net/)is a good free piece of software. I use it for ripping and cleaning up vinyl. Not the easiest to use but quite competent when you find your way round it. Could be worth a try at the price.

You can see the waveform so it gives you a clue as to what you need to remove.

[Teejayexc]

http://www.youtube.com/watch?v=hERLH3Q-hCQ

Hth, TJ.