研究声音距离与混响如何影响空间听觉判断。
Effects of auditory distance cues and reverberation on spatial perception and listening strategies
- 在混响环境中，人会增加头部移动以补偿声学线索模糊。
- 距离影响定位准确度，但不改变听觉策略。
- 结果揭示了听觉系统对真实声学环境的自适应机制。
空间听觉是大脑利用听觉线索识别声音来源的能力，对日常听觉至关重要。尽管简化范式推动了对空间听觉的理解，但其生态效度不足，难以适用于真实场景。本研究通过更符合现实情境的实验设计，考察了听者运动、混响和声音距离对定位准确性的影响。参与者在无特定听觉策略指导的情况下，在消音或混响环境下完成主动定位任务。结果表明，混响环境中头部移动频率更高，提示这是一种适应性策略，用以缓解混响导致的双耳线索不确定性。虽然距离不影响听觉策略选择，但显著影响定位表现。研究结果表明，听觉行为会根据当前声学环境动态调整，以支持空间感知的有效性。
原文摘要 · Abstract (English)
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.
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