Litovsky R Y, Macmillan N A
Department of Psychology, University of Massachusetts, Amherst 01003.
J Acoust Soc Am. 1994 Aug;96(2 Pt 1):752-8. doi: 10.1121/1.411390.
Minimum audible angles (MAAs) were estimated for single noise bursts, and for burst pairs that satisfied the conditions of the precedence effect (that is, produced fused images). In one burst-pair condition, the bursts to be discriminated differed in lead location; in the other, they differed in lag location. Sounds were presented over loudspeakers. MAAs were lowest for single bursts, slightly higher for lead discrimination, and much higher for lag discrimination. Presence of a standard reference burst had no reliable effect on performance. The data are interpreted using a model of Shinn-Cunningham et al. [J. Acoust. Soc. Am. 93, 2923-2932 (1993)] in which discrimination of precedence-effect burst pairs is based on the lateral position of the auditory image, which is a weighted average of the positions of the leading and lagging bursts.
估计了单个噪声脉冲以及满足优先效应条件（即产生融合图像）的脉冲对的最小可听角度（MAA）。在一种脉冲对条件下，要区分的脉冲在前置位置上有所不同；在另一种条件下，它们在后置位置上有所不同。声音通过扬声器呈现。单个脉冲的MAA最低，前置辨别时略高，后置辨别时则高得多。标准参考脉冲的存在对表现没有可靠影响。使用Shinn-Cunningham等人[《美国声学学会杂志》93, 2923 - 2932 (1993)]的模型对数据进行了解释，其中优先效应脉冲对的辨别基于听觉图像的横向位置，该位置是前置和后置脉冲位置的加权平均值。
