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Table 2 List of 11 acoustic parameters and their definitions

From: Nocturnal “humming” vocalizations: adding a piece to the puzzle of giraffe vocal communication

Acoustic parameters Definition
F0 start (Hz) Fundamental frequency at the beginning of the vocalization
F0 mid (Hz) Fundamental frequency at the middle of the vocalization
F0 end (Hz) Fundamental frequency at the end of the vocalization
F0 min (Hz) Lowest fundamental frequency
F0 max (Hz) Highest fundamental frequency
F0 range (Hz) Difference between minimum and maximum fundamental frequency
F0 mean (Hz) Arithmetic average frequency across a call
F0 median (Hz) Central point from data points in ascending order of the F0 contour
Duration (s) Time between onset to the end of call