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Suppose you're maybe a touring band that's going to play a lot of shows in sequence that have very short allotted sound check times. But you also happen to have

  1. A portable digital mixer with very powerful master bus convolution engines
  2. High quality measurement microphones
  3. A studio with well calibrated monitors

Then what are the practical considerations stopping you from mixing the band in your controlled studio environment, and at the day of the show just showing up with your measurement microphone, measuring the house's transfer function and feeding its inverse to your mixer's convolution processor? That way you'd never worry about a bad mix on stage.

I've tried searching for this but I'm having a real hard time with keywords here. Is there any known documentation for an approach like this?

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  • Beringer a while ago offered an EQ, which could perform such a run with an extra microphone. Doubt that adjusting EQ will suffice in your situation.
    – MS-SPO
    Jan 13 at 6:35
  • @MS-SPO Was it good though? A "self-calibrating" EQ is a subset of the setup I'm imagining, removing resonances with a low order transfer function, but what i'm describing would also work to cancel out reverberation in the room.
    – Gabriel Golfetti
    Jan 13 at 8:05
  • If I recall correctly this was the model: thomann.de/gb/behringer_deq2496_ultracurve_bundle.htm . Feedback destroying is said to be one of its features. As you can see, it's currently not available, so perhaps as reused studio equipment. // Please look for tests on "Behringer Ultracurve Pro DEQ 2496", as I'm only finding German ones. // Product descr.+manual: behringer.com/…
    – MS-SPO
    Jan 13 at 8:43
  • It seems to me that the most time consuming steps of a live event soundcheck are not the setting of the PA processing or the recall of a scene memorized on the mixing desk. Checking mics positioning, line continuity and patching, etc. is time consuming. In addition, I would think that a convolution engine on the master bus would add embarrassing latency to the the system.
    – audionuma
    Jan 13 at 17:45
  • From my experience, especially in large venues, it is common to have the FOH system tuned by the band sound man with pink noise or sweeps, sound analyzer and speakers processor.
    – audionuma
    Jan 13 at 17:46

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