Level dominance for the detection of changes in level distribution in sound streams.
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.
Department of Cognitive Sciences, University of California, Irvine, 3151 Social Science Plaza, Irvine, California 92697-5100, USA. v.m.richards@uci.edu
Virginia M
VM
Richards
Yi
Y
Shen
Charles
C
Chubb
D000161:Acoustic Stimulation; D000162:Acoustics; D000704:Analysis of Variance; D001299:Audiometry; D001307:Auditory Perception; D001309:Auditory Threshold; D006801:Humans; D007600:Judgment; D016015:Logistic Models; D009038:Motion; D015588:Observer Variation; D011571:Psychoacoustics; D015203:Reproducibility of Results; D017603:Signal Detection, Psychological; D013016:Sound; D013018:Sound Spectrography; D013997:Time Factors; D055815:Young Adult