Effects of auditory distance cues and reverberation on spatial perception and listening strategies

2025-05-23

AI Summary

Conventional simplified paradigms in spatial hearing research suffer from low ecological validity, failing to uncover the true mechanisms underlying auditory spatial perception in realistic acoustic environments. Method: This study employed an active sound-source localization paradigm within both anechoic and reverberant environments—incorporating naturalistic distance variations—while concurrently tracking three-dimensional head movements and simulating binaural sound fields. Contribution/Results: For the first time without explicit strategy instructions, we demonstrate that reverberation significantly increases head movement frequency, constituting a dynamic compensatory response to degraded binaural cues; in contrast, source distance modulates localization accuracy but leaves strategic behavior invariant. These findings establish auditory spatial behavior as a robust, environment-dependent adaptive process. They provide critical empirical evidence and a novel experimental foundation for ecological validity–driven computational modeling of spatial hearing.

Technology Category

• Cognitive Modeling & Cognitive Systems: Adaptive Behavior
• Game Theory and Economic Paradigms: Behavioral Game Theory
• Planning, Routing, and Scheduling: Activity and Plan Recognition

Application Category

• User Modeling, Personalization and Recommendation: Practical large-scale studies of user experience
• Security and Privacy: Large-scale security measurements
• Graph Algorithms and Modeling for the Web: Efficient manipulation of static and dynamic Web-related graphs

Abstract

Spatial hearing, the brain's ability to use auditory cues to identify the origin of sounds, is crucial for everyday listening. While simplified paradigms have advanced the understanding of spatial hearing, their lack of ecological validity limits their applicability to real-life conditions. This study aims to address this gap by investigating the effects of listener movement, reverberation, and distance on localisation accuracy in a more ecologically valid context. Participants performed active localisation tasks with no specific instructions on listening strategy, in either anechoic or reverberant conditions. The results indicate that the head movements were more frequent in reverberant environments, suggesting an adaptive strategy to mitigate uncertainty in binaural cues due to reverberation. While distance did not affect the listening strategy, it influenced the localisation performance. Our outcomes suggest that listening behaviour is adapted depending on the current acoustic conditions to support an effective perception of the space.

Problem

• Investigates auditory distance cues and reverberation effects on spatial perception.
• Examines localization accuracy in ecological contexts with movement and reverberation.
• Studies adaptive listening strategies in different acoustic environments.

Innovation

• Investigates listener movement in reverberant environments
• Uses active localisation tasks without specific instructions
• Analyzes adaptive head movements to improve spatial perception