Reverberation Calculator
Modeling a room of:
Height H =
m =
ft
Length L =
m =
ft
Width W =
m =
ft
With absorption coefficients:
a
walls
=
Select Surface
Acoustic tile, rigid mount
Acoustic tile, suspended
Acoustical plaster
Ordinary plaster, on lath
Gypsum wallboard, 1/2" on studs
Plywood sheet, 1/4" on studs
Concrete block, unpainted
Concrete block, painted
Concrete block, poured
Brick
Vinyl tile on concrete
Heavy carpet on concrete
Heavy carpet on felt backing
Ordinary window glass
Heavy plate glass
Draperies, medium velour
a
floor
=
Select Surface
Plywood sheet, 1/4" on studs
Concrete block, unpainted
Concrete block, poured
Brick
Vinyl tile on concrete
Heavy carpet on concrete
Heavy carpet on felt backing
Platform floor, wooden
Upholstered seating, unoccupied
Upholstered seating, occupied
Wood seating, unoccupied
Wooden pews, occupied
a
ceiling
=
Select Surface
Acoustic tile, rigid mount
Acoustic tile, suspended
Acoustical plaster
Ordinary plaster, on lath
Gypsum wallboard, 1/2" on studs
Plywood sheet, 1/4" on studs
Concrete block, unpainted
Concrete block, poured
Brick
Vinyl tile on concrete
for average of: a
avg =
gives an effective absorbing area of S
e
=
m
2
= ft
2
for a room of volume V =
m
3
=
ft
3
.
The corresponding reverberation time is:
RT
60
=
seconds.
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