Tuning of Estimated Sound Absorption Coefficient of Materials of Reverberation Room Method

Table 6

Absolute error of the 64K25 estimation model.

Frequency	Estimated SAC of reverberation room method	SAC measured by reverberation room method	Absolute error
100	0.05	0.04	−0.01
125	0.08	0.08	−0.01
160	0.11	0.11	−0.01
200	0.16	0.17	0.00
250	0.24	0.24	−0.01
315	0.33	0.31	−0.03
400	0.43	0.39	−0.03
500	0.64	0.54	−0.10
630	0.80	0.64	−0.16
800	0.81	0.73	−0.08
1000	0.82	0.82	0.00
1250	0.83	0.89	0.05
1600	0.84	0.90	0.06
2000	0.86	0.91	0.06
2500	0.86	0.91	0.05
3150	0.85	0.84	−0.01
4000	0.83	0.82	0.00
5000	0.78	0.82	0.04