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Auditory Processing of Interaural Envelope Differences

耳间包络差异的听觉处理

基本信息

批准号：
6689970
负责人：
MARK A STELLMACK
金额：
$ 7.43万
依托单位：
UNIVERSITY OF MINNESOTA
依托单位国家：
美国
项目类别：
财政年份：
2002
资助国家：
美国
起止时间：
2002-02-01 至 2005-06-30
项目状态：
已结题

来源：
https://reporter.nih.gov/project-details/6689970
关键词：
auditory discrimination auditory stimulus behavioral /social science research tag binaural hearing clinical research cues hearing human subject neural information processing perceptual maskings sound frequency sound perception stimulus interval university student

项目摘要

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.

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从一般意义上说，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。