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. Author manuscript; available in PMC: 2018 May 29.
Published in final edited form as: Anim Cogn. 2015 Nov 18;19(2):285–315. doi: 10.1007/s10071-015-0933-6

Table 2. Frequency of spectral peaks (formants, in kHz) in the average spectral envelope of each vocalization type.

The location of these peaks is shown as dotted lines on Figure 5a.

F1 F2 F3 F4
Begging 0.67 1.69 4.67 6.53
Long Tonal 1.67 3.86
Tuck 1.22 2.55
Thuk 1.36 2
Distress 0.67 1.38 2.69
Wsst 0.69 1.81
Whine 0.76 1.65
Nest 0.76 2.12
Tet 0.95 2.38
Distance 1.43 3.24
Song 1.19 3.72