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Reverberant Sound Level (From Room Constant)    1/1, 1/3

Strutt|Building Acoustics|Reverberant Level (From Room Constant) calculates the reverberant sound level based on the Room Constant `R`, as follows:

`L_(p,rev)= L_W - 10log(4/R)`

Note that calculating `L_(p,rev)` using `R` is the 'exact' calculation (provided that the sound field is diffuse); the alternate approach (Reverberant Level (from RT)) is an approximation for situations where the average absorption coefficient in the room `alpha_(ave)` is low.

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