Open Access
Table 5
Standard deviations for the differences between the rubber ball impact sound level at each receiving point and average obtained using the Korean engineering method for 79 apartment houses.
| Octave band | Receiving point |
||||
|---|---|---|---|---|---|
| RC (dB) | R1 (dB) | R2 (dB) | R3 (dB) | R4 (dB) | |
| 32 Hz | 1.3 | 1.3 | 2.6 | 0.4 | 0.6 |
| 63 Hz | 0.5 | 1.1 | 1.4 | 0.1 | 1.3 |
| 125 Hz | 1.4 | 0.6 | 0.3 | 0.4 | 0.1 |
| 250 Hz | 0.8 | 0.4 | 0.3 | 0.0 | 0.2 |
| 500 Hz | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
| SNQ | 0.9 | 0.1 | 0.5 | 0.3 | 0.1 |
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