声音定位中的时间加权
Temporal weighting in sound localization.
作者信息
Stecker G Christopher, Hafter Ervin R
机构信息
Department of Psychology, University of California, Berkeley 94720, USA.
出版信息
J Acoust Soc Am. 2002 Sep;112(3 Pt 1):1046-57. doi: 10.1121/1.1497366.
Abstract
The dynamics of sound localization were studied using a free-field direct localization task (pointing to sound sources) and an observer-weighting analysis that assessed the relative influence of each click in a click-train stimulus. In agreement with previous studies of the precedence effect and binaural adaptation, weighting functions showed increased influence of the onset click when the interclick interval (ICI) was short (<5 ms). For longer ICIs, all clicks in a train contributed roughly the same amount to listeners' localization responses. Finally, when a short gap was introduced in the middle of a train, the influence of the click immediately following the gap increased, in agreement with the "restarting" results obtained by Hafter and Buell [J. Acoust. Soc. Am. 88, 806-812 (1990)].
摘要
利用自由场直接定位任务（指向声源）和观察者加权分析研究了声音定位的动态过程，该分析评估了点击序列刺激中每次点击的相对影响。与先前关于优先效应和双耳适应的研究一致，当点击间隔（ICI）较短（<5毫秒）时，加权函数显示起始点击的影响增加。对于较长的ICI，序列中的所有点击对听众的定位反应贡献大致相同。最后，当在序列中间引入一个短间隙时，间隙后立即出现的点击的影响增加，这与Hafter和Buell [《美国声学学会杂志》88, 806 - 812 (1990)] 获得的“重新启动”结果一致。
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