Yuan-Chuan Chiang
Richard L. Freyman
Dept. of Commun. Disorders, 6 Arnold House, Univ. of Massachusetts, Amherst, MA 01003
The current experiment examined the influence of noise on the precedence
effect, focusing on the importance of noise source location. Listeners seated
in an anechoic chamber judged whether the image produced by a lead-lag pair of
4-ms noise bursts (2-ms delay) was to the left or right of midline. The lag
loudspeaker was fixed at 45(degrees) to the left or right, while the lead
loudspeaker was positioned at a variable number of degrees to the opposite
side. The angle of the lead loudspeaker producing 50% judgements favoring the
lead was used to estimate its perceptual weighting relative to the lag. This
weighting, which was quantified using the c metric developed by
Shinn-Cunningham et al. [