Pitch (F0) and formant profiles of human vowels and vowel-like baboon grunts: The role of vocalizer body size and voice-acoustic allometry

摘要: Key voice features—fundamental frequency (F0) and formant frequencies—can vary extensively between individuals. Much of the variation can be traced to differences in size larynx vocal-tract cavities, but whether these turn simply reflect speaker body (i.e., neutral vocal allometry) remains unclear. Quantitative analyses were therefore undertaken test relationship F0 frequencies for human vowels. To taxonomic generality relationships, same conducted on vowel-like grunts baboons, whose phylogenetic proximity humans similar production biology acoustic patterns recommend them such comparative research. For adults both species, males larger than females had lower mean frequencies. However, beyond this, did not track body-size sexes either nor within hum...