Table 1. Potential for individual identity coding and repeatabilities for ten acoustic parameters from 493 calls of 84 individuals.

		Potential for individual identity coding				Repeatabilities
Acoustic parameters		mean±SD (untransformed)	meanCVi	CVb	PIC	R	Confidence interval
Duration (ms)		210.24±62.66	17.56	35.53	2.02	0.83	0.81–0.86
Amplitude	Mean	32.47±4.83	21.60	40.70	1.88	0.85	0.83–0.89
Amplitude modulation (1/ms)	Variance	(5.06±2.56)×10−3	24.90	45.86	1.84	0.82	0.80–0.85
Frequency (Hz)	Mean	3933.65±411.20	22.34	32.79	1.47	0.73	0.68–0.77
Frequency modulation	Mean	11.78±6.39	15.89	30.50	1.92	0.81	0.78–0.82
Frequency modulation	Variance	286.62±121.03	24.13	35.82	1.48	0.75	0.68–0.81
Entropy	Mean	−2.51±0.44	14.53	28.05	1.93	0.80	0.77–0.82
Entropy	Variance	0.29±0.15	28.75	35.76	1.24	0.66	0.63–0.71
Pitch (Hz)	Mean	619.68±66.53	13.06	35.37	2.71	0.88	0.85–0.90
Pitch goodness	Mean	829.94±314.53	18.66	40.62	2.18	0.86	0.82–0.86