Sound propagation; attenuation of the reference sound (pink noise 88 db(A) 1 metre from the source) at predetermined intervals from the source
| Distance from the source (m) | ||||||
|---|---|---|---|---|---|---|
| 2 | 6 | 10 | 14 | 18 | 22 | |
| Sound reflecting LAeq (dB) | 83 | 80 | 78 | 75 | 72 | 70 |
| Sound absorbing LAeq (dB) | 82 | 76 | 72 | 70 | 65 | 64 |