Now the last parameter R, the room constant, is very important and is defined as
(R = A / (1- αm
(R = Sαm / (1- αm
:where
(A = total room sound absorption (m2 Sabine
αm = average absorption coefficient
(S = total surface area (m2
room constant and sound pressure level
(Lp = Lw + 10 log (Q / (4 π r^2) + 4 / R
:where
[alig
