Auditory Processing of Interaural Envelope Differences

描述(申请人提供)：动态变化的双耳信息 提供有关声源移动的提示，以及允许 收听者在感知上隔离多个声源中的各个声源 环境。拟议中的实验集中在听觉的方式上 系统处理时变的耳间信息。这些实验是 旨在洞察时间上可能的双耳限制 正在处理。第一个实验将在相同的情况下提供直接比较 时间分辨率和时间分辨率的单声道测量之间的听者组 时变耳间电平差的分辨率。特征描述 单耳和双耳时间加工之间的关系可以产生 对听觉可用的线索类型(时间或光谱)的洞察 系统在不同的收听情况下。第二个实验将评估 不同频率下双耳调制器之间干扰的存在和性质 相对调制频率。从一般意义上讲，结果将是 适用于检测到一个声源的运动必须 在其他运动声源存在的情况下执行。听觉系统 对耳际差异极为敏感。用于描述以下指标的指标 耳朵间的差异意味着听觉系统提取出类似的 双耳处理过程中的统计。第三个拟议的实验将 辨别用于区分耳间差异的可能线索 在刺激信封里。这反过来又将为我们提供关于 最可能由双耳系统在提取 耳间包络差。

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.