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Chimpanzee vowel-like sounds and voice quality suggest formant space expansion through the hominoid lineage
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In: ISSN: 0962-8436 ; EISSN: 1471-2970 ; Philosophical Transactions of the Royal Society B: Biological Sciences ; https://hal.archives-ouvertes.fr/hal-03455415 ; Philosophical Transactions of the Royal Society B: Biological Sciences, Royal Society, The, 2021, Voice modulation: from origin and mechanism to social impact (Part II), 377 (1841), ⟨10.1098/rstb.2020.0455⟩ (2021)
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Abstract:
International audience ; The origins of human speech are obscure; it is still unclear what aspects are unique to our species or shared with our evolutionary cousins, in part due to a lack of a common framework for comparison. We asked what chimpanzee and human vocal production acoustics have in common. We examined visible supra-laryngeal articulators of four major chimpanzee vocalizations (hoos, grunts, barks, screams) and their associated acoustic structures, using techniques from human phonetic and animal communication analysis. Data were collected from wild adult chimpanzees, Taï National Park, Ivory Coast. Both discriminant and principal component classification procedures revealed classification of call types. Discriminating acoustic features include voice quality and formant structure, mirroring phonetic features in human speech. Chimpanzee lip and jaw articulation variables also offered similar discrimination of call types. Formant maps distinguished call types with different vowel-like sounds. Comparing our results with published primate data, humans show less F1-F2 correlation and further expansion of the vowel space, particularly for [i] sounds. Unlike recent studies suggesting monkeys achieve human vowel space, we conclude from our results that supra-laryngeal articulatory capacities show moderate evolutionary change, with vowel space expansion continuing through hominoid evolution. Studies on more primate species will be required to substantiate this.
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Keyword:
[SCCO]Cognitive science; [SDV.BA.ZV]Life Sciences [q-bio]/Animal biology/Vertebrate Zoology; behaviour; chimpanzees; evolution evolution of language; formants; hominoid; primate; speech
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URL: https://doi.org/10.1098/rstb.2020.0455 https://hal.archives-ouvertes.fr/hal-03455415/document https://hal.archives-ouvertes.fr/hal-03455415 https://hal.archives-ouvertes.fr/hal-03455415/file/Grawunder2021_ChimpVowelSpace.pdf
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Supplementary figures and tables from Chimpanzee vowel-like sounds and voice quality suggest formant space expansion through the hominoid lineage ...
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Supplementary figures and tables from Chimpanzee vowel-like sounds and voice quality suggest formant space expansion through the hominoid lineage ...
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Supplementary material from "Chimpanzee vowel-like sounds and voice quality suggest formant space expansion through the hominoid lineage" ...
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Supplementary material from "Chimpanzee vowel-like sounds and voice quality suggest formant space expansion through the hominoid lineage" ...
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Supplementary figures and tables from Chimpanzee vowel-like sounds and voice quality suggest formant space expansion through the hominoid lineage ...
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The development of communication in alarm contexts in wild chimpanzees
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In: ISSN: 0340-5443 ; EISSN: 1432-0762 ; Behavioral Ecology and Sociobiology ; https://hal.archives-ouvertes.fr/hal-02454678 ; Behavioral Ecology and Sociobiology, Springer Verlag, 2019, 73 (8), ⟨10.1007/s00265-019-2716-6⟩ (2019)
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The development of communication in alarm contexts in wild chimpanzees
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The development of communication in alarm contexts in wild chimpanzees
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Vocalizing in chimpanzees is influenced by social-cognitive processes
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Chimpanzee vowel-like sounds and voice quality suggest formant space expansion through the hominoid lineage
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In: Philos Trans R Soc Lond B Biol Sci (1479)
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