How do you remove guitars from recordings to make backing tracks?

Discussion in 'Recording Studio' started by Deadpool_25, Sep 7, 2017.

  1. Deadpool_25

    Deadpool_25 SS.org Regular

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    I'm almost certain he's playing along to the recording here. If so, how do you remove/reduce the guitar to turn it into basically a backing track? Or is he just playing over a recording that is lower in volume or something?

     
  2. vansinn

    vansinn ShredNeck into Beck

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    I have no answer but have been thinking the same, so posting to keep this thread alive ;)

    I am thinking, though, that perhaps some utility related to a Kareoke player could do the trick, that is, lock onto the guitar (or whichever instrument) and attempt to remove [most of] it, or at least reduce the level of it.
     
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  3. Lorcan Ward

    Lorcan Ward 7slinger Contributor

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    He's playing over the recording which is at a lower volume than most people do, could also be some EQ cuts on the original to make his guitar stick out more.

    You can't remove an instrument from a recording, you can EQ certain frequencies out which will push an instrument back in the mix but that will also cut those frequencies from every other instrument.

    If you hear a recording without the guitar it is because someone used the master tracks to make a version without the guitars. Or they made their own backing track.
     
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  4. Deadpool_25

    Deadpool_25 SS.org Regular

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    Cool. That's what I figured. Thanks!
     
  5. isotropy

    isotropy SS.org Regular

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    Take 2 copies of the original track.

    Flip the polarity on the second one and the two audio signals will completely cancel each other out (destructive interference). Now, if you EQ the flipped track in a very particular way, you can get the sum of the two to keep certain frequencies. It's a super imperfect approach and is probably a lot more difficult to get a good result than I make it seem here.

    Have I done it? Nope. But in theory it should work, though not sure how well.
     
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  6. Deadpool_25

    Deadpool_25 SS.org Regular

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    Interesting theory, but in that case it would be simpler to simply cut frequencies from a single recording using a high-multiband EQ.
     
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  7. crankyrayhanky

    crankyrayhanky SS.org Regular

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    a lot of guitars are panned hard LR. There's probably a plugin that gives you a center focus (and vice versa for Karaoke)?
     
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  8. steinmetzify

    steinmetzify CHUG & SLUDGE

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    Also, if they're panned that way and you can get it in 5.1 surround, you can isolate the channels to delete....we do it for film to rescore for practice using Audacity....dump the music and keep the dialogue because that's usually in the center channel.
     
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  9. Drew

    Drew Forum MVP

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    That's actually more or less the theory behind equalizers.

    If you don't have access to the stems, your best bet is to just record one yourself. It takes a lot of work, but it's great practice.
     
  10. marcwormjim

    marcwormjim SS.org Regular

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    Are you in need of practice?
     
  11. requiemsoup

    requiemsoup Custom User Title

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    The only method I can think of that would sound really good is using Melodyne. It has a polyphonic feature that allows you to isolate virtually any track. But its $699.
     
  12. Drew

    Drew Forum MVP

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    EVERYONE is in need of practice. :lol:
     
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