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Table 5 Parameters and definition of various vocal parameters measured for each call types

From: A small vocal repertoire during the breeding season expresses complex behavioral motivations and individual signature in the common coot

Parameters Definition
Harmonic A series of musical tones with several times frequencies of F0.
PF The frequency of maximum energy in the power spectrum of a target syllable.
F0 The frequency of the first harmonic peak in the power spectrum of a target syllable.
F0max Highest frequency of the first harmonic of a target syllable.
F0min Lowest frequency of the first harmonic of a target syllable.
T Total duration of a target syllable.
TI Duration between a syllable and a next one.