Table 2 Mean values (Mean ± SD) of the acoustic parameters for each call-cluster and copulation calls
Cluster | Scream 1 | Scream 2 | Grunt | Roar grunt | Bark | Wahoo | Copulation call |
|---|---|---|---|---|---|---|---|
(N = 52) | (N = 70) | (N = 226) | (N = 91) | (N = 94) | (N = 101) | (N = 25) | |
Duration [ms] | 1045 ± 359 | 876 ± 292 | 180 ± 34 | 455 ± 79 | 290 ± 58 | 319 ± 66 | 97 ± 20 |
DFA2 mean [Hz] | 4460 ± 747 | 2685 ± 510 | 434 ± 102 | 341 ± 51 | 1087 ± 146 | 963 ± 142 | 1414 ± 625 |
DFB1ch mean [Hz] | 127 ± 57 | 71 ± 44 | 9 ± 8 | 3 ± 2 | 49 ± 28 | 72 ± 22 | 80 ± 77 |
Range mean [Hz] | 4468 ± 990 | 2444 ± 696 | 952 ± 316 | 530 ± 189 | 1606 ± 393 | 1722 ± 328 | 2137 ± 1150 |
PFtr mean [Hz] | 870 ± 428 | 385 ± 239 | 72 ± 47 | 35 ± 27 | 163 ± 65 | 176 ± 59 | 236 ± 117 |
CS mean | 0.97 ± 0.01 | 0.97 ± 0.01 | 0.97 ± 0.02 | 0.99 ± 0.01 | 0.97 ± 0.01 | 0.92 ± 0.01 | 0.97 ± 0.01 |
F0 [Hz] | 2352 ± 577 | 1758 ± 267 | 80 ± 23 | 70 ± 10 | 588 ± 105 | 472 ± 81 | 290 ± 149 |
Noise [%] | 63 ± 20 | 53 ± 18 | 14 ± 10 | 42 ± 14 | 24 ± 14 | 41 ± 12 | 47 ± 19 |
Hnr1 | 0.16 ±0.06 | 0.31 ± 0.08 | 0.26 ±0.07 | 0.39 ± 0.07 | 0.46 ±0.07 | 0.46 ± 0.04 | 0.37 ± 0.12 |