Table 1.
Acoustic comparisons of playback tracks used in long‐term experiments. Sound recordings were analysed in MATLAB 2013a using the paPAM analysis package (Merchant et al., 2015); full details provided in main text
| Noise playback | RMS level (60s) (dB re 1 μPa) | Consistency at 130 dB | Consistency at 140 dB | Peak level (dB re 1 μPa) | 90% energy envelope (ms) | Rise time (ms) | SELss (dB re 1 μPa2*s) |
|---|---|---|---|---|---|---|---|
| Ambient | 117.23 | 0.65 | 0.00 | 141.20 | NA | NA | NA |
| Ship | 124.71 | 6.53 | 0.00 | 138.63 | NA | NA | NA |
| Pile‐driving | 146.66 | 25.49 | 7.72 | 163.31 | 142.65 | 39.10 | 147.40 |
| Seismic | 131.54 | 11.91 | 0.28 | 158.39 | 10285.30 | 77.51 | 143.48 |