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Vocal size exaggeration may have contributed to the origins of vocalic complexity
In: ISSN: 0962-8436 ; EISSN: 1471-2970 ; Philosophical Transactions of the Royal Society B: Biological Sciences ; https://hal.archives-ouvertes.fr/hal-03501105 ; Philosophical Transactions of the Royal Society B: Biological Sciences, Royal Society, The, 2022, 377 (1841), ⟨10.1098/rstb.2020.0401⟩ (2022)
Abstract: International audience ; Vocal tract elongation, which uniformly lowers vocal tract resonances (formant frequencies) in animal vocalizations, has evolved independently in several vertebrate groups as a means for vocalizers to exaggerate their apparent body size. Here, we propose that smaller speech-like articulatory movements that alter only individual formants can serve a similar yet less energetically costly size-exaggerating function. To test this, we examine whether uneven formant spacing alters the perceived body size of vocalizers in synthesized human vowels and animal calls. Among six synthetic vowel patterns, those characterized by the lowest first and second formant (the vowel /u/ as in ‘boot’) are consistently perceived as produced by the largest vocalizer. Crucially, lowering only one or two formants in animal-like calls also conveys the impression of a larger body size, and lowering the second and third formants simultaneously exaggerates perceived size to a similar extent as rescaling all formants. As the articulatory movements required for individual formant shifts are minor compared to full vocal tract extension, they represent a rapid and energetically efficient mechanism for acoustic size exaggeration. We suggest that, by favouring the evolution of uneven formant patterns in vocal communication, this deceptive strategy may have contributed to the origins of the phonemic diversification required for articulated speech. This article is part of the theme issue ‘Voice modulation: from origin and mechanism to social impact (Part II)’.
Keyword: [SCCO.LING]Cognitive science/Linguistics; [SCCO.PSYC]Cognitive science/Psychology; [SDV.BA]Life Sciences [q-bio]/Animal biology; acoustic communication; behaviour; cognition; evolution body size; formants; speech articulation; vocal tract length; voice modulation
URL: https://hal.archives-ouvertes.fr/hal-03501105/document
https://hal.archives-ouvertes.fr/hal-03501105
https://hal.archives-ouvertes.fr/hal-03501105/file/Proofs_corrected_RSTB20200401p%20round%202.pdf
https://doi.org/10.1098/rstb.2020.0401
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2
Predicting strength from aggressive vocalizations versus speech in African bushland and urban communities
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3
Static and dynamic formant scaling conveys body size and aggression
In: R Soc Open Sci (2022)
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4
Predicting strength from aggressive vocalizations versus speech in African bushland and urban communities
In: ISSN: 0962-8436 ; EISSN: 1471-2970 ; Philosophical Transactions of the Royal Society B: Biological Sciences ; https://hal.archives-ouvertes.fr/hal-03501108 ; Philosophical Transactions of the Royal Society B: Biological Sciences, Royal Society, The, 2021, 376 (1840), ⟨10.1098/rstb.2020.0403⟩ (2021)
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5
Computational modelling of penguins’ vocal tract
In: Forum Acusticum ; https://hal.archives-ouvertes.fr/hal-03230814 ; Forum Acusticum, Dec 2020, Lyon, France. pp.2037-2037, ⟨10.48465/fa.2020.0984⟩ (2020)
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6
Electronic Supplementary Material from Do penguins’ vocal sequences conform to linguistic laws? ...
Favaro, Livio; Gamba, Marco; Cresta, Eleonora. - : The Royal Society, 2020
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7
Electronic Supplementary Material from Do penguins’ vocal sequences conform to linguistic laws? ...
Favaro, Livio; Gamba, Marco; Cresta, Eleonora. - : The Royal Society, 2020
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8
Supplementary material from "Do penguins’ vocal sequences conform to linguistic laws?" ...
Favaro, Livio; Gamba, Marco; Cresta, Eleonora. - : The Royal Society, 2020
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9
Supplementary material from "Do penguins’ vocal sequences conform to linguistic laws?" ...
Favaro, Livio; Gamba, Marco; Cresta, Eleonora. - : The Royal Society, 2020
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10
Individual differences in human voice pitch are preserved from speech to screams, roars and pain cries
Pisanski, Katarzyna; Raine, Jordan; Reby, David. - : The Royal Society, 2020
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11
Do penguins’ vocal sequences conform to linguistic laws?
In: Biol Lett (2020)
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12
Physiological and perceptual correlates of masculinity in children’s voices
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13
“This is what a mechanic sounds like.” Children’s vocal control reveals implicit occupational stereotypes
Cartei, Valentina; Oakhill, Jane; Garnham, Alan. - : SAGE Publications, 2020
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14
Do penguins’ vocal sequences conform to linguistic laws?
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15
Data from: Dogs perceive and spontaneously normalise formant-related speaker and vowel differences in human speech sounds ...
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16
Dogs perceive and spontaneously normalize formant-related speaker and vowel differences in human speech sounds
In: Biol Lett (2019)
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17
Children can control the expression of masculinity and femininity through the voice
Cartei, Valentina; Garnham, Alan; Oakhill, Jane. - : The Royal Society, 2019
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18
The role of sex-related voice variation in children’s gender-role stereotype attributions
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19
Human roars communicate upper-body strength more effectively than do screams or aggressive and distressed speech
Raine, Jordan; Pisanski, Katarzyna; Bond, Rod. - : Public Library of Science, 2019
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20
Children can control the expression of masculinity and femininity through the voice
Cartei, Valentina; Garnham, Alan; Oakhill, Jane. - : Royal Society, The, 2019
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