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Table 2
Absorption coefficients, scattering coefficients, relative surface area and genetic algorithm freedom per material of the model of the church as measured (in the state at the time of the measurement).
| Material class | Absorption coefficients α |
Genetic algorithm freedom (%) | Realistic surface area | Scattering coefficient | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 63 Hz | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz | 8000 Hz | ||||
| Plaster dome | 0.21 | 0.21 | 0.18 | 0.03 | 0.06 | 0.07 | 0.08 | 0.03 | 50 | 9.0 | 0.25 |
| Plaster hard | 0.03 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.06 | 0.05 | 10 | 15.9 | 0.25 |
| Plaster smooth | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.04 | 0.04 | 10 | 15.2 | 0.01 |
| Wainscotting | 0.36 | 0.33 | 0.23 | 0.20 | 0.12 | 0.09 | 0.11 | 0.05 | 20 | 7.6 | 0.25 |
| Stained glass | 0.11 | 0.12 | 0.09 | 0.11 | 0.04 | 0.05 | 0.03 | 0.02 | 0 | 4.3 | 0.01 |
| Floor | 0.01 | 0.02 | 0.02 | 0.02 | 0.02 | 0.04 | 0.05 | 0.03 | 10 | 12.1 | 0.01 |
| Organ pipes | 0.20 | 0.26 | 0.27 | 0.22 | 0.13 | 0.14 | 0.15 | 0.05 | 50 | 0.5 | 0.50 |
| Pulpit | 0.11 | 0.10 | 0.12 | 0.09 | 0.10 | 0.07 | 0.08 | 0.09 | 0 | 1.4 | 0.50 |
| Columns | 0.01 | 0.01 | 0.01 | 0.02 | 0.03 | 0.06 | 0.07 | 0.04 | 0 | 13.1 | 0.01 |
| Plaster hard scattering | 0.03 | 0.05 | 0.05 | 0.06 | 0.05 | 0.07 | 0.09 | 0.05 | 0 | 1.2 | 0.50 |
| Altar | 0.01 | 0.01 | 0.01 | 0.01 | 0.01 | 0.02 | 0.02 | 0.02 | 0 | 0.4 | 0.01 |
| Scattering furniture wood | 0.32 | 0.33 | 0.23 | 0.17 | 0.23 | 0.30 | 0.24 | 0.10 | 20 | 7.5 | 0.50 |
| Metal grids | 0.03 | 0.03 | 0.03 | 0.03 | 0.03 | 0.02 | 0.01 | 0.01 | 0 | 0.3 | 0.01 |
| Altar pillows | 0.15 | 0.15 | 0.70 | 0.60 | 0.60 | 0.85 | 0.90 | 0.90 | 0 | 0.3 | 0.01 |
| Plaster vaults | 0.37 | 0.36 | 0.22 | 0.20 | 0.12 | 0.12 | 0.05 | 0.07 | 30 | 5.2 | 0.01 |
| Wooden under organ | 0.36 | 0.46 | 0.41 | 0.20 | 0.17 | 0.10 | 0.13 | 0.07 | 20 | 1.2 | 0.25 |
| Wooden larger cavity | 0.28 | 0.44 | 0.35 | 0.24 | 0.16 | 0.09 | 0.11 | 0.05 | 10 | 1.4 | 0.01 |
| Ceiling panels | 0.38 | 0.48 | 0.42 | 0.19 | 0.15 | 0.09 | 0.11 | 0.05 | 30 | 4.6 | 0.01 |
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