Acoustic performance
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Acoustic performance

Measurement according to international standard ISO 11654 and US standard ASTM C 423.

Arcolis® one-sided panels, 1200 x 600 mm, placed directly against the wall or fixed directly to the ceiling (Acoustics test reports available on request).

Sound absorption coefficient αp

Frequency
(Hz)		 αρ
[-]
125 0.35
250 0.90
500 1.00
1000 1.00
2000 0.90
4000 0.90

Sound absorption coefcient αs according to ASTM C423

Fréquence
(Hz)		 100 125 160 200 250 315 400 500 630
αs
[-]		 0.19 0.27 0.53 0.77 0.96 1.03 1.09 1.06 1.12
Fréquence
(Hz)		 800 1000 1250 1600 2000 2500 3150 4000 5000
αs
[-]		 1.05 0.97 0.93 0.91 0.90 0.96 0.89 0.87 0.90

Measurement of the equivalent absorption area according to standard ISO 354.

12 Arcolis® double-sided baffles, 1200 x 1200 mm. Suspended vertically, with 500 mm spacing (Acoustics test reports available on request).

Equivalent sound absorption area per element Aobj

Frequency
(Hz)		 100 125 160 200 250 315 400 500 630
Aobj
[m2]		 0.31 0.37 0.60 0.86 0.93 1.16 1.28 1.44 1.55
Frequency
(Hz)		 800 1000 1250 1600 2000 2500 3150 4000 5000
Aobj
[m2]		 1.67 1.59 1.64 1.53 1.57 1.52 1.51 1.59 1.63

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