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  • Title: Interaural spectral asymmetry and sensitivity to interaural time differences.
    Author: Brown CA, Yost WA.
    Journal: J Acoust Soc Am; 2011 Nov; 130(5):EL358-64. PubMed ID: 22088041.
    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.
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