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Updated: Sep 14, 2025
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A Lightweight, Headphones-based System for Manipulating Auditory Feedback in Songbirds
Published on: November 26, 2012
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Auditory perception of biodiversity by human listeners
Elie Grinfeder1,2, Jérôme Sueur2, Richard McWalter1
1Laboratoire des Systèmes Perceptifs (LSP), CNRS, Ecole normale supérieure, Université Paris Sciences & Lettres (PSL University), Paris, France.
Frontiers in Psychology
|July 23, 2025
Summary
Humans struggle to accurately count biological sound sources like birds in natural soundscapes. This sub-optimal sensitivity to biodiversity suggests grouping mechanisms aid perception.
Area of Science:
- Bioacoustics
- Auditory Perception
- Biodiversity Science
Background:
- Natural soundscapes contain complex auditory information.
- Understanding human perception of biodiversity is crucial for ecological studies.
Purpose of the Study:
- To investigate human auditory capacity for evaluating the number of biological sound sources.
- To assess human sensitivity to biodiversity in natural soundscapes.
Main Methods:
- Participants judged the number of birds in algorithmically generated soundscapes.
- Controlled variables included bird abundance, species richness, song disparities, behavior, and background noise.
Main Results:
- Human numerosity judgments were generally inaccurate but influenced by the number of birds.
- Perception was robust to low-intensity background noise.
- Acoustic disparities between species improved numerosity judgments.
Conclusions:
- Humans exhibit sub-optimal sensitivity to biodiversity in soundscapes.
- Auditory grouping mechanisms appear to play a role in biodiversity perception.
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