Table 3. Average value of correlation coefficients for signals within each call type and between call types.

	Call Types	A	B	C	D	E	F	G	H	I	J
Average value of correlation coefficients between call types	A
		B	0.19
		C	0.28	0.23
		D	0.40	0.37	0.12
		E	0.24	0.23	0.36	0.24
		F	0.28	0.25	0.11	0.23	0.21
		G	0.23	0.33	0.13	0.15	0.21	0.11
		H	0.32	0.29	0.14	0.18	0.14	0.11	0.14
		I	0.26	0.29	0.29	0.22	0.11	0.25	0.17	0.15
	J	0.28	0.29	0.28	0.24	0.19	0.19	0.15	0.14	0.23
Average value of correlation coefficients within call types		0.72	0.87	0.90	0.95	0.70	0.84	0.80	0.73	0.89	–

Notes.

“–” represents that the similarity calculation cannot be performed because the sample size was less than 2.