To most, it was just an old piece of measurement software. To Elias, it was the only tool he trusted for a room this difficult. The new versions were sleek, sure, but v6 had a specific grit—a way of showing the phase response that felt more like a conversation with the physics of the building than a digital calculation.

If the software itself had bugs or calculation errors, the coherence metric would be meaningless. Thus, the integrity of the entire system alignment process rests on the software being verified as mathematically sound.