Room Acoustics: RT60 and Axial Modes
Reverberation time from the Sabine equation (0.049 x volume / total sabins) plus the three first axial room modes c/(2 x dimension) that predict bass buildup and nulls. The room half of the live-production acoustics math, alongside spl-distance and spl-atmospheric.
Formula and source
RT60 = 0.049 x V / A (Sabine, imperial); first axial mode per dimension = c / (2 x length), c = 1130 ft/s.
W.C. Sabine reverberation equation (public domain); axial room-mode relation f = c / (2 x L) from first-principles standing-wave acoustics.
Audience
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