Table 2.
Acoustic Characteristics of Wind Turbine Noise Across 2-h Periods of the WTN Nights
| Window filter | |||
|---|---|---|---|
| Ajar | Closed | ||
| AM depth | 1–2 dB (low) | L AEq,2h = 33 dB LAF,max = 37 dB | L AEq,2h = 29 dB LAF,max = 34 dB |
| 7–9 dB (high) | L AEq,2h = 34 dB LAF,max = 45 dB | L AEq,2h = 29 dB LAF,max = 43 dB |
Noise levels were measured at the pillow position.
AM, amplitude modulation; LAEq,2h, equivalent A-weighted sound pressure level over a 2-h period; LAF,max, maximum A-weighted sound pressure level with a fast (0.125 s) time constant.