Upper limits of auditory motion perception

听觉运动感知的上限

• 批准号: 327392-2013
• 负责人: Guastavino, Catherine
• 金额: $ 1.82万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=631171
• 关键词: Upper; limits; auditory; motion; perception

One of the major challenges to the auditory system in everyday listening is to track moving sound sources to predict their future path (e.g. an approaching car, a buzzing mosquito). However, our understanding of the perceptual (and physiological) underpinnings of auditory motion is still lagging compared to our understanding of static sound localization. If we know relatively little about auditory motion perception, we know even less about our ability to discriminate the velocity of moving sounds. Only a handful of studies have investigated auditory velocity perception and those that did used relatively slow velocities. But, we recently demonstrated that listeners are able to perceive the motion of rotating sounds at much higher velocities. Furthermore, most research on sound localization has been conducted in anechoic (or 'dry') environments. However, in almost all natural environments spatial hearing is challenged by the presence of reverberation. Detrimental effects of reverberation on static sound localization have been reported, but its effect on auditory motion will be investigated systematically for the first time in this program by repeating experiments in a large concert hall. Finally, this program will characterize various spatialization techniques for the positioning of virtual sound sources in terms of their ability to reproduce acoustic motion around the listener. This program investigates the relative contribution of different perceptual mechanisms used to localize moving sounds by manipulating the characteristics of the sound (spectral content), its movement (velocity, trajectories) and the environment (reverberation, presentation mode). The short-term goal is to identify the necessary and sufficient cues for auditory motion detection for circular and linear trajectories using experimental conditions and behavioural tasks designed to push the limits of the auditory system. The long-term goal of this program is to understand the perceptual underpinnings of auditory motion in order to extend or reconcile current theory regarding motion perception. Future directions include investigating how visual, auditory and haptic information can be used together to provide complementary motion information.

日常聆听中听觉系统面临的主要挑战之一是跟踪移动声源以预测其未来路径（例如驶近的汽车、嗡嗡作响的蚊子）。然而，与我们对静态声音定位的理解相比，我们对听觉运动的感知（和生理）基础的理解仍然滞后。如果我们对听觉运动知觉知之甚少，那么我们对辨别移动声音速度的能力就更不了解了。只有少数研究调查了听觉速度感知，并且那些研究使用了相对较慢的速度。但是，我们最近证明，听众能够感知以更高速度旋转的声音的运动。此外，大多数关于声音定位的研究都是在消声（或“干燥”）环境中进行的。然而，在几乎所有自然环境中，空间听觉都受到混响的存在的挑战。混响对静态声音定位的不利影响已有报道，但本项目将通过在大型音乐厅重复实验，首次系统地研究混响对听觉运动的影响。最后，该程序将根据其再现听者周围声学运动的能力来描述用于定位虚拟声源的各种空间化技术。该程序通过操纵声音的特征（频谱内容）、其运动（速度、轨迹）和环境（混响、呈现模式）来研究用于定位移动声音的不同感知机制的相对贡献。短期目标是使用旨在突破听觉系统极限的实验条件和行为任务，确定圆形和线性轨迹的听觉运动检测的必要和充分的线索。该计划的长期目标是了解听觉运动的感知基础，以便扩展或协调当前有关运动感知的理论。未来的方向包括研究如何一起使用视觉、听觉和触觉信息来提供互补的运动信息。