Table 2.
Noise/dB | MTL | SP | SS | VIP |
0 | 128.0 ± 5.1 | 52.3 ± 23.0 | 308.9 ± 222.8 | 275.5 ± 125.5 |
40 | 130.2 ± 8.9a | 82.6 ± 15.7b | 329.3 ± 95.6 | 359.2 ± 227.8 |
80 | 134.9 ± 12.6b | 110.3 ± 20.0b | 458.3 ± 104.3a | 251.8 ± 97.2 |
120 | 151.9 ± 17.1b | 115.2 ± 20.4b | 503.7 ± 65.3b | 257.8 ± 142.2 |
P < 0.05.
P < 0.01 vs 0 dB (control).