% ISINAC ACOUSTIC WORLD S.L.U. - ISINAC CURTAIN ILUCS 2 capas + 200 mm cavity
% Absorption coefficient, one-third octave bands, EN ISO 354.
% Test report: 110259-6, Fundacion Tecnalia R&I
% Columns: frequency (Hz), absorption coefficient (-). Values may exceed 1 (edge effect).
% Use as an Interpolation function in COMSOL (Ray Acoustics / Acoustic Diffusion Equation).
% alpha_w 0.80 (H) per ISO 11654 clause 4.3. It is strongly recommended to use this single-number rating together with the complete absorption curve.

100 0.060
125 0.210
160 0.260
200 0.460
250 0.560
315 0.680
400 0.830
500 0.840
630 0.810
800 0.780
1000 0.790
1250 0.810
1600 0.800
2000 0.840
2500 0.890
3150 0.930
4000 1.000
5000 1.010
