Auditory Processing of Interaural Envelope Differences

描述（由申请人提供）：动态变化的双耳信息 提供关于声源运动的线索，以及允许 收听者在感知上分离多个声源中的各个声源 环境.拟议的实验集中在听觉的方式， 系统处理时变的耳间信息。这些实验 旨在提供对时间上可能的双耳限制的深入了解 处理.第一个实验将提供一个直接的比较， 在单耳时间分辨率和时间分辨率测量之间的一组听众 时变耳间水平差异的分辨率。表征 单声道和双耳时间处理之间关系可以产生 洞察力的类型线索（时间或频谱）可用于听觉 在不同的听力环境下。第二个实验将评估 在不同的环境中双耳调制器之间的干扰的存在和性质 相对调制频率一般来说，结果将是 适用于检测一个声源的运动必须 在存在其他移动声源的情况下执行。听觉系统 对耳间差异非常敏感用来描述 耳间差异意味着听觉系统提取类似的 在双耳处理期间的统计。第三个实验将 区分用于区分耳间差异的可能线索 在刺激信封里。这反过来将提供线索， 最可能由双耳系统执行的处理 耳间包络差异。

DESCRIPTION (provided by applicant): Dynamically varying binaural information provides cues as to the movement of sound sources, as well as cues that allow listeners to perceptually segregate individual sound sources in multi-source environments. The proposed experiments focus on the manner in which the auditory system processes time-varying interaural information. These experiments are designed to provide insight into possible binaural limitations in temporal processing. The first experiment will provide a direct comparison in the same group of listeners between monaural measures of temporal resolution and temporal resolution of time-varying interaural differences of level. Characterization of the relationship between monaural and binaural temporal processing can produce insight as to the types of cues (temporal or spectral) available to the auditory system in various listening situations. The second experiment will assess the existence and nature of interference between binaural modulators at various relative modulation frequencies. In a general sense, the results will be applicable to situations in which detection of movement of one sound source must be performed in the presence of other moving sound sources. The auditory system is exquisitely sensitive to interaural differences. The metric used to describe interaural differences implies that the auditory system extracts a similar statistic during binaural processing. The third proposed experiment will differentiate between possible cues used to discriminate interaural differences in stimulus envelopes. This, in turn, will provide clues as to the nature of processing that is most likely performed by the binaural system in extracting interaural envelope differences.