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: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=572009
• 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.

在日常聆听中，听觉系统面临的主要挑战之一是跟踪移动的声音来源以预测其未来路径（例如，即将来临的汽车，嗡嗡的蚊子）。但是，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）基础的理解仍然落后。如果我们对听觉运动感知相对较少了解，那么我们对区分运动速度的能力的了解甚至更少。只有少数研究研究了听觉速度感知，以及那些使用相对较慢的速度的知觉。但是，我们最近证明了听众能够以更高的速度感知旋转声音的运动。此外，大多数关于声音本地化的研究都是在消除（或“干”）环境中进行的。但是，在几乎所有自然环境中，空间听证会受到混响的存在挑战。据报道，回响对静态声音定位的有害影响，但通过在大型音乐厅中重复实验，将首次系统地研究其对听觉运动的影响。最后，该程序将以各种空间化技术来定位虚拟声源，以围绕听众复制声学运动的能力。 该计划通过操纵声音（光谱含量），其运动（速度，轨迹）和环境（回响，演示模式）来调查用于定位运动声音的不同感知机制的相对贡献。短期目标是使用实验条件和行为任务来确定循环和线性轨迹的听觉运动检测的必要线索，旨在突破听觉系统的限制。该计划的长期目标是了解听觉运动的感知基础，以扩展或调和有关运动感知的当前理论。未来的方向包括调查如何将视觉，听觉和触觉信息一起使用以提供互补的运动信息。