Table 2. Description of the acoustic parameters used in the analyses.
| Parameter | Description |
| Duration (ms)1 | duration of the call |
| DFA 1 mean (Hz)1 | frequency at which the distribution of frequency amplitudes reaches the first quartile, mean across time segments |
| DFB1 start (Hz)2 | first dominant frequency band, at the beginning of the call |
| DFB1 end (Hz)2 | first dominant frequency band, at the end of the call |
| DFB1 mean (Hz)1 | mean first dominant frequency band across all time segments |
| PF max (Hz)1 | frequency of the maximum frequency of the peak frequency across time segments |
| PF mean (Hz)1 | mean of the frequencies with the highest amplitude across all time segments |
| F0 mean (Hz) 3 | mean fundamental frequency across all time segments |
1
Parameter used for reliability and validity calculation.
2
Parameter only used for reliability calculation.
3
Parameter only used for tonal calls and tonal call parameter calculation.