Yes, it requires some twinkling for sure... rePhase is as easy as EQing the phase with sliders... still it's doable if one is really interested. And it's free
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Is there a good instructions for using Rephase with REW measurements?
I think you can then apply the EQ with EqualizerAPO which is my preferred EQ software right now.
Last time I tried to do rephase I just got lost.
Why is there no way to do AutoEQ like REW does, but for phase correction with FIR filters?