Table 1 Factor loadings on the two acoustic dimensions calculated from the acoustic parameters describing juvenile calls.
From: Size does matter: crocodile mothers react more to the voice of smaller offspring
Acoustic parameters | Acoustic Dimension AD1 (% of variance = 55.4%) | Acoustic Dimension AD2 (% of variance = 19.1%) |
|---|---|---|
mean pitch (Hz) | −0.188 | 0.946 |
start pitch (Hz) | −0.720 | 0.577 |
max pitch (Hz) | −0.702 | 0.597 |
min pitch (Hz) | 0.607 | 0.591 |
end pitch (Hz) | 0.603 | 0.574 |
maximal frequency (Hz) | 0.911 | 0.025 |
Q25 (Hz) | 0.909 | 0.041 |
Q75 (Hz) | 0.976 | 0.013 |
IQR (Hz) | 0.807 | −0.029 |
cent (Hz) | 0.970 | 0.011 |
skewness | −0.531 | −0.316 |
kurtosis | −0.371 | −0.337 |
sfm | 0.898 | −0.052 |
