Center channel isolation

  • Thread starter Thread starter Mark Singlecut
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Mark Singlecut

New member
Hey there,
I've known how to make "instrumentals" of songs(by inverting phase) for a while, but I've never really understood how the opposite, isolating the vocals, really works. I know there are plugins that help you isolate the center channel, but I was wondering if someone could explain to me how the "center channel isolation" plugins work or how I could do it manually. I know/and heard that using plugins are much easier, but I would just like to know the technical details in order to educate myself. :) Thanks in advance!
 
You don't. The way you're getting rid of the vocals is by summing the signal to mono and inverting. The opposite is simply not inverting.
 
But what about the VST plugins that take the center channel and try to eliminate the rest? To me, it sounds like much more is going on than just taking a stereo track and converting it to mono. For example, when I put the center channel isolater plugin on, the voice is somewhat isolated, and there is a very, how do you say, modulated or "spacey" type sound going on in the background. It sounds like there is a hi-pass filter too.....I'm not sure. But it definitely sounds different(and more isolated) than if I just converted a stereo track to mono. But I was wondering if anyone could explain what was happening in the plugin. Sorry if this question is too general, I'm still a newbie. :)
 
It's trying to keep track of common vocal frequencies and reject the rest.

You might notice that it sounds absolutely horrific...
 
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