用于检测声音流中水平分布变化的水平优势。
Level dominance for the detection of changes in level distribution in sound streams.
机构信息
Department of Cognitive Sciences, University of California, Irvine, 3151 Social Science Plaza, Irvine, California 92697-5100, USA.
出版信息
J Acoust Soc Am. 2013 Aug;134(2):EL237-43. doi: 10.1121/1.4813591.
Sound streams were generated by randomly choosing the levels of tone pips from two different distributions, A and B. Of the 18 tone pips, the first nine were drawn from distribution A and the second nine from distribution B, or the opposite. The listeners' task was to indicate order, A-B or B-A. In two conditions the A and B distributions differed in mean (condition 1) or variance (condition 2). In contrast to an ideal observer, listeners' strategies were consistent across the two conditions. Analyses suggest that listeners relied primarily on the more intense tone pips in making their decisions.
声音流是通过随机选择来自两个不同分布的音调点的水平来生成的，分别为 A 分布和 B 分布。在这 18 个音调点中，前九个来自 A 分布，后九个来自 B 分布，或者相反。听众的任务是指示顺序，A-B 或 B-A。在两种情况下，A 和 B 分布在均值（条件 1）或方差（条件 2）上存在差异。与理想观察者不同，听众的策略在两种情况下是一致的。分析表明，听众在做出决策时主要依赖于更强烈的音调点。
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