title: Interaural spectral asymmetry and sensitivity to interaural time differences.
abstract: Listeners' ability to discriminate interaural time difference (ITD) changes in low-frequency noise was determined as a function of differences in the noise spectra delivered to each ear. An ITD was applied to Gaussian noise, which was bandpass filtered using identical high-pass, but different low-pass cutoff frequencies across ears. Thus, one frequency region was dichotic, and a higher-frequency region monotic. ITD thresholds increased as bandwidth to one ear (i.e., monotic bandwidth) increased, despite the fact that the region of interaural spectral overlap remained constant. Results suggest that listeners can process ITD differences when the spectra at two ears are moderately different.
authors.affiliation: Psychoacoustics Laboratory, Department of Speech and Hearing Science, Arizona State University, PO Box 870102, Tempe, Arizona 85287-0102, USA. c-b@asu.edu
authors.forename: Christopher A
authors.initials: CA
authors.lastname: Brown
authors.forename: William A
authors.initials: WA
authors.lastname: Yost
mesh_terms: D000161:Acoustic Stimulation; D000704:Analysis of Variance; D001299:Audiometry; D001306:Auditory Pathways / Q000502:physiology*; D001307:Auditory Perception; D001309:Auditory Threshold; D004192:Discrimination, Psychological; D004423:Ear / Q000294:innervation*; D006801:Humans; D008297:Male; D013018:Sound Spectrography; D013997:Time Factors; D013998:Time Perception
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