The kind of processing power required is the type in your PC or notebook, which you are not going to find in a receiver or dedicated equalizer anytime soon.
If this is all that's holding them back, I don't see why it hasn't made it into a receiver yet, especially at the higher end. And you'd think they'd make dedicated hardware specifically for that task. I admit I know nothing, but to me, it seems like it has to be that the software isn't mature enough, not the hardware. Otherwise, I don't see how we couldn't see very advanced room correction within 5 years. Assuming the software needs the fastest processor there is currently, there's no way it couldn't be cheap enough to implement in that timeframe.
