Table 1.
Sound absorption coefficient of stone.
| Frequency | 125 Hz | 250 Hz | 500 Hz | 1 kHz | 2 kHz | 4 kHz |
|---|---|---|---|---|---|---|
| Stone | 0.03 | 0.03 | 0.03 | 0.04 | 0.01 | 0.07 |
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