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The role of loudness in vocal intimidation

Anikin, Andrey LU orcid ; Valente, Daria ; Pisanski, Katarzyna ; Cornec, Clément ; Bryant, Gregory A. and Reby, David (2024) In Journal of Experimental Psychology: General 153(2). p.511-530
Abstract
Across many species, a major function of vocal communication is to convey formidability, with low voice frequencies traditionally considered the main vehicle for projecting large size and aggression. Vocal loudness is often ignored, yet it might explain some puzzling exceptions to this frequency code. Here we demonstrate, through acoustic analyses of over 3,000 human vocalizations and four perceptual experiments, that vocalizers produce low frequencies when attempting to sound large, but loudness is prioritized for displays of strength and aggression. Our results show that, although being loud is effective for signaling strength and aggression, it poses a physiological trade-off with low frequencies because a loud voice is achieved by... (More)
Across many species, a major function of vocal communication is to convey formidability, with low voice frequencies traditionally considered the main vehicle for projecting large size and aggression. Vocal loudness is often ignored, yet it might explain some puzzling exceptions to this frequency code. Here we demonstrate, through acoustic analyses of over 3,000 human vocalizations and four perceptual experiments, that vocalizers produce low frequencies when attempting to sound large, but loudness is prioritized for displays of strength and aggression. Our results show that, although being loud is effective for signaling strength and aggression, it poses a physiological trade-off with low frequencies because a loud voice is achieved by elevating pitch and opening the mouth wide into a-like vowels. This may explain why aggressive vocalizations are often high-pitched and why open vowels are considered “large” in sound symbolism despite their high first formant. Callers often compensate by adding vocal harshness (nonlinear vocal phenomena) to undesirably high-pitched loud vocalizations, but a combination of low and loud remains an honest predictor of both perceived and actual physical formidability. The proposed notion of a loudness–frequency trade-off thus adds a new dimension to the widely accepted frequency code and requires a fundamental rethinking of the evolutionary forces shaping the form of acoustic signals. (PsycInfo Database Record (c) 2023 APA, all rights reserved) (Less)
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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Experimental Psychology: General
volume
153
issue
2
pages
20 pages
publisher
American Psychological Association (APA)
external identifiers
  • pmid:38010781
  • scopus:85180834591
ISSN
0096-3445
DOI
10.1037/xge0001508
language
English
LU publication?
yes
id
da95e503-e46c-4bb3-8445-e9c0216d7777
date added to LUP
2023-12-04 11:05:21
date last changed
2024-10-09 10:38:02
@article{da95e503-e46c-4bb3-8445-e9c0216d7777,
  abstract     = {{Across many species, a major function of vocal communication is to convey formidability, with low voice frequencies traditionally considered the main vehicle for projecting large size and aggression. Vocal loudness is often ignored, yet it might explain some puzzling exceptions to this frequency code. Here we demonstrate, through acoustic analyses of over 3,000 human vocalizations and four perceptual experiments, that vocalizers produce low frequencies when attempting to sound large, but loudness is prioritized for displays of strength and aggression. Our results show that, although being loud is effective for signaling strength and aggression, it poses a physiological trade-off with low frequencies because a loud voice is achieved by elevating pitch and opening the mouth wide into a-like vowels. This may explain why aggressive vocalizations are often high-pitched and why open vowels are considered “large” in sound symbolism despite their high first formant. Callers often compensate by adding vocal harshness (nonlinear vocal phenomena) to undesirably high-pitched loud vocalizations, but a combination of low and loud remains an honest predictor of both perceived and actual physical formidability. The proposed notion of a loudness–frequency trade-off thus adds a new dimension to the widely accepted frequency code and requires a fundamental rethinking of the evolutionary forces shaping the form of acoustic signals. (PsycInfo Database Record (c) 2023 APA, all rights reserved)}},
  author       = {{Anikin, Andrey and Valente, Daria and Pisanski, Katarzyna and Cornec, Clément and Bryant, Gregory A. and Reby, David}},
  issn         = {{0096-3445}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{511--530}},
  publisher    = {{American Psychological Association (APA)}},
  series       = {{Journal of Experimental Psychology: General}},
  title        = {{The role of loudness in vocal intimidation}},
  url          = {{http://dx.doi.org/10.1037/xge0001508}},
  doi          = {{10.1037/xge0001508}},
  volume       = {{153}},
  year         = {{2024}},
}