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voice removal

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Joined: 11 Jul 2011
Posts: 1

PostPosted: Mon Jul 11, 2011 3:31 pm    Post subject: voice removal Reply with quote

need help,

how do you remove vocals with this software?

thank u so much
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Joined: 23 Mar 2008
Posts: 50

PostPosted: Fri Feb 17, 2012 2:17 pm    Post subject: Reply with quote

It's apparent that there are plenty of folks wanting to do カラオケ, remixes or some similar horrors with published audio files, but not understanding the inherent technicalities of audio and are thus slightly mislead by features such as vocal remover.

Some tips have been given but search is no friend if not used. So here it is then, the brand new final cure for this common failure which will definitively work with any software, no quarantee.

1. Pack your software and your travel gear.
2. Find out who did the mixing/editing on the audio files you are so keen to now mangle with.
3. Book a trip to visit them in person and travel you will, if you will.
4. Require that the person(s) involved will now give you the original mixes without the vocal performances. Your software packages will aid you here, working best if you made them to prayer beads. USB sticks on a thread works wonders. Keep praying.
5. Return either with newly acquired audio files, new insights to audio editing or maybe even both. Do not leave your software behind unless it was a crucial part of exchange procedures, now held as a captive.
6. Mix.
7. Publish.
8. Wait for the arrival of next hopefuls, asking you for the recordings stripped from the performances they didn't manage to cope with. Accept no cheap trades but do discuss audio alchemy if so inclined.


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Joined: 23 Mar 2008
Posts: 50

PostPosted: Fri Feb 17, 2012 10:56 pm    Post subject: Reply with quote

Ok, so maybe the original question was a legitimate one, adding to other existing topics on the very same page not possible and search didn't work. The manual doesn't really tell how it is done in Wavosaur, so I will try.

Open the audio file. If you want to process the whole file, head straight to Process menu and click Vocal remover. Done. If you want to effect only specific parts of the file, use your mouse to select those areas first and then hit the Vocal remover. It's probably the results of this process which will make some people to wonder if they really are using this feature right.

Unfortunately I have some sad news, there is no audio magic to make this a perfect process. Nothing new for the audio buffs, but maybe common readers need (more) examples. So, once again we're gonna illustrate the problem together:

First, please check out this frequency chart by Independent recording

Maybe you could copy that picture and open it up in your favorite graphic editor. Notice the bars representing different voices and instruments? Good. How this works is, each bar shows the frequency range of any given voice or instrument from the lowest possible to the highest possible. You might also notice that there's a lot of overlap, many instruments covering the same ranges. Anyways, were are going to do a neat, perfect, complete vocal removal next. Choose an eraser tool and wipe away the bar representing the vocals. Please do notice that with audio as presented in this picture, the only way you can do this is wiping up/down along the whole chart, thus wiping away everything else within the same range too!

So go ahead and do it, wipe away up and down all the vocal frequencies. Now we can ponder again where the problem really is. It's not that we are not able to wipe away something, but that we'll get rid of quite a lot of the other stuff too if and when doing that. This is the problem in a nutshell and there is no real aftermarket remedy for this. Sorry. None, period.

Now, if the vocal performance happens within a more limited range (as is usual), you'll get to wipe away that much less of other stuff also, but the basic problem is still the same. I can already hear many buts and excuses rising. Yes, there are examples of perfect tracks with no traces of vocals, but all the other instruments are still there loud and clear. Did you ever wonder how they were done? One very simple answer is just too obvious, they were done without the vocals to begin with! And you thought I was joking earlier? Wink

But we do have all these wondrous audio tools, remove this and cancel that, they can't all be fake, now can they? Well yes and no, it depends...I gather this must be the confusing part.
First, we want the tracks to have the best possible audio quality. Lossy compression does funny things to stereo imaging, amongst other things. IF we have real stereo tracks with good quality to begin with, there's a slight chance to get half decent results. With mono, just forget it. With stereo, we also would like to have the vocals to be removed either being panned into one extreme (unusual) or dead center (more common).
In the first case we can remove the vocal channel and everything else on that side. Problem being, we are left with one channel (mono) and only half the material that was there originally.
In the latter case we can invert the channels so the sum will cancel all the same frequencies between them. Problem being that we end up again with (double) mono signal and what is remaining might be more or less messed up. Especially the things usually sharing the same mixing space near center like kick drum and bass might also disappear.

Btw. just for fun, try the Vocal remover process 2nd time to the same selection and see what happens! That's right, there was no differing material left between the channels, so the inverted mix sum is zero.

We could also route both channels different ways, say Mid-Side processing, and then applying EQ and gates creatively before summing them back together. It's a combination of these techniques that sometimes works, sometimes doesn't. But there is no magic in this. Even if your plugin (EQ, whatever) says vocals, in real life your machine can not tell what the vocals are, or even where exactly they are...unless you have them on totally separate tracks.

Center Channel Extraction/Isolation

Q & A: Vocal Isolation

The Truth About Vocal Eliminators
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Joined: 13 Oct 2006
Posts: 184

PostPosted: Sat Feb 18, 2012 8:46 pm    Post subject: Reply with quote

i agree
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