Abbreviation | Formulation | Detailed description |
---|---|---|
Duration [ms]* | Duration | Call duration measured within the adjusted start- and end thresholds |
DFA2 mean [Hz]* | Distribution of frequency amplitudes | Frequency at which the distribution of frequencies reaches the second quartile of the total distribution, mean values across time segments |
DFB1ch mean [Hz]* | Modulation of the first dominant frequency band | Mean deviation between 1st dominant frequency band and floating average curve |
Range mean [Hz]* | Frequency range | Mean difference between the highest and the lowest frequency |
PFtr mean [Hz]* | Trend of the peak frequency | Mean deviation between the peak frequency (PF) and the liner trend |
Cs mean* | Consistency of time segments | Mean correlation coefficient of all successive time segments of the call |
F0 mean [Hz]+ | Fundamental frequency | Mean fundamental frequency across all time segments in which a harmonic structure could be detected |
Noise [%]+ | Noisiness | Percentage of time segments in which no harmonic or disturbed structure could be detected |
Hnr1 + | Harmonic to noise ratio | Harmonic to noise ratio in the first third of the overall call frequency (1 = no noise) |