Binaural processing model based on contralateral inhibition. I. Model structure
Binaural processing model based on contralateral inhibition. I. Model structure
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DOI：
10.1121/1.1383297
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发表时间：
2001-08-01
影响因子：
2.4
通讯作者：
Kohlrausch, A
中科院分区：
文献类型：
--
作者：
Breebaart, J;van de Par, S;Kohlrausch, A
本文提出了一种定量双耳信号检测模型，该模型扩展了Dau等人[J. Acoust.美国社会99，3615-3622（1996）]。该模型分为三个阶段。第一阶段包括右和左单声道中的外围预处理。第二阶段是双耳处理器，其产生双耳呈现的刺激的时间依赖性内部表示。这一级是基于Jeffress延迟线扩展抽头衰减器线。通过这种扩展，内部表示编码两个耳间的时间和强度差异。与大多数基于兴奋性-兴奋性相互作用的现今模型相比，本模型中的双耳相互作用基于同侧信号的对侧抑制。最后一级是中央处理器，它提取一个决策变量，该变量可用于检测检测任务中信号的存在，但也可以导出有关声源位置和紧凑性的信息。在两篇随附的文章中，将模型预测与人类观察者在各种实验条件下获得的数据进行了比较。(C)2001年，美国声学学会。
This article presents a quantitative binaural signal detection model which extends the monaural model described by Dau et al. [J. Acoust. Soc. Am. 99, 3615-3622 (1996)]. The model is divided into three stages. The first stage comprises peripheral preprocessing in the right and left monaural channels. The second stage is a binaural processor which produces a time-dependent internal representation of the binaurally presented stimuli. This stage is based on the Jeffress delay line extended with tapped attenuator lines. Through this extension, the internal representation codes both interaural time and intensity differences. In contrast to most present-day models, which are based on excitatory-excitatory interaction, the binaural interaction in the present model is based on contralateral inhibition of ipsilateral signals. The last stage, a central processor, extracts a decision variable that can be used to detect the presence of a signal in a detection task, but could also derive information about the position and the compactness of a sound source. In two accompanying articles, the model predictions are compared with data obtained with human observers in a great variety of experimental conditions. (C) 2001 Acoustical Society of America.