Estimate a room’s reverberation time with Sabine and Eyring, and how many square meters of absorption it needs to reach its target. The targets per use are the same ones Verberio applies.
Estimated reverberation
0.79sEyring · Sabine gives 0.84 s. It is above target.
Target for control room
0.40s± 0.08 s · background noise NC-25 · common practice
Material still needed
14.8m²of porous panel, or 12.6 metric sabins of whatever absorption you prefer.
The math assumes the room is a box and that its materials absorb exactly what the table says. A real room almost never does either: it has modes the formula cannot see, the carpet in it is not the carpet in the table, and bass behaves differently from mids. Sabine and Eyring give you a starting point; the number that goes into a report comes from measuring.