Table 1 Values (mean ± SD) of acoustic variables measured for hiss and snort call types of giraffe and Student t test results of their comparison
Call types | Duration (s) | fpeak (kHz) | q25 (kHz) | q50 (kHz) | q75 (kHz) | Pulse rate (Hz) |
|---|---|---|---|---|---|---|
Hiss (n = 22) | 0.72 ± 0.22 | 0.69 ± 0.61 | 0.71 ± 0.24 | 1.55 ± 0.37 | 2.94 ± 0.60 | Non-pulsed |
Snort (n = 20) | 0.28 ± 0.10 | 0.20 ± 0.29 | 1.05 ± 0.47 | 2.23 ± 0.90 | 4.39 ± 1.64 | 23.7 ± 4.2 |
Student t test results | t = 8.34; p < 0.001 | t = 3.11; p = 0.003 | t = 3.03; p = 0.004 | t = 3.21; p = 0.003 | t = 3.84; p < 0.001 | Not applicable |