Table 1.
Result of softness, gas permeability, pore size, sound absorption coefficient

Sample ID (number)	TS7 (dB V2rms)	TS750 (dB V2rms)	HF (%)	Darcy permeability constant	Max pore size (um)	Mean pore size (um)	NRC
1	160.393	234.186	71.5	0.10007	8.065	3.1351	0.0408
2	97.054	174.908	77.5	0.07230	7.003	2.6224	0.0448
3	101.989	209.978	76.4	0.00596	6.573	2.7031	0.0450
4	128.365	319.467	82.5	0.09824	11.046	5.4060	0.0443
5	165.238	214.172	89.2	0.03800	8.033	3.6056	0.0452
6	158.033	188.315	70.5	0.09503	11.108	4.7530	0.0421
7	159.721	373.908	62.8	0.08040	10.790	4.6944	0.0399
8	126.720	179.983	84.1	0.05723	10.233	3.9140	0.0446
9	175.278	197.094	76.8	0.10959	12.652	5.2880	0.0444
10	84.286	239.986	67.7	0.12085	14.093	5.6456	0.0379
11	137.622	251.170	79.1	0.12230	12.920	5.5586	0.0464
12	139.367	366.033	87.0	0.18103	13.798	7.2896	0.0349
13	139.725	282.389	86.0	0.10634	11.803	5.5542	0.0434
14	115.244	238.786	86.6	0.12147	12.356	6.1026	0.0449
15	53.396	173.520	52.7	0.04872	8.742	3.4248	0.0501
16	110.469	129.217	82.6	0.12838	12.055	5.7892	0.0362
17	99.768	100.617	74.9	0.08558	10.631	4.3394	0.0405
18	69.743	129.619	80.5	0.12272	12.356	6.1742	0.0378
19	109.138	274.115	91.4	0.11166	12.185	5.4623	0.0374
20	111.901	128.253	86.6	0.08424	11.734	4.8311	0.0408
21	140.087	233.571	65.1	0.12520	13.178	5.7120	0.0393
22	132.703	305.109	97.0	0.09577	10.761	4.1572	0.0363
23	97.377	204.630	71.2	0.14221	14.667	5.5003	0.0374
24	99.129	97.399	102.2	0.12695	11.187	5.0658	0.0349
25	141.824	212.867	101.0	0.09554	11.077	4.5727	0.0380