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George, I tend to disagree. What is added digitally (reverb) can be subtracted digitally. It's the exact same principle as noise/echo cancellation. The frequency range/complexity of the "noise" has absolutely nothing to do with digitally recognizing the exact same frequencies that are repeated (i.e. delayed) over and over, panned left-and-right, and cancelling them out using the signature of the center-panned frequencies. Vocal removal is a tiny little application in digital engineering. Speakerphones are a BIG application in the same discipline. It takes time to trickle-down. And nudging.
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