Le modèle VRML de la salle modélisée dans CATT-Acoustic

Absorption Coefficients for Elmia Hall

surface 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz

wooden floor (stairs and stage)

0.15

0.08

0.06

0.06

0.06

0.06

wooden walls and underside of balconies (birchwood)

0.21

0.12

0.09

0.06

0.09

0.13

ceiling

0.20

0.15

0.10

0.08

0.04

0.02

reflectors above the stage

0.12

0.10

0.04

0.03

0.03

0.02

seats in main area

0.45

0.60

0.73

0.80

0.75

0.64

seats in the rear part

0.50

0.66

0.80

0.88

0.83

0.70

linoleum floor between the seats (balcony)

0.02

0.03

0.03

0.04

0.06

0.05

back wall and walls without wood veneer, variable reflectors

0.20

0.12

0.06

0.04

0.07

0.10

window glass

0.02

0.06

0.03

0.03

0.02

0.02

plastered concrete (front and underside of speaker rooms)

0.02

0.02

0.03

0.03

0.04

0.06

ventilation grid on the stage

0.08

0.12

0.15

0.15

0.12

0.08

 

Diffusivity Coefficient for Elmia Hall

surface 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz
for big flat surfaces: 0.15 0.13 0.11 0.09 0.07 0.05
for smaller flat surfaces and misc. surfaces: 0.30 0.27 0.24 0.21 0.18 0.15
for the audience surfaces: 0.30 0.40 0.50 0.60 0.65 0.70
for the closed adjustable reflectors 0.15 0.20 0.25 0.35 0.45 0.50