Temporal weighting of azimuthal cues in the free field and in headphone listening
Dynamic aspects of binaural cue processing can be captured via several types of psychophysical measurements in human listeners. These include sensitivity measures with spatially dynamic stimuli, temporal integration measurements, and perceptual weighting measurement with stochastic spatial cue variation. The latter approach has been adopted in a series of papers and ongoing studies. These assessed the time course of binaural lateralization and azimuthal localization as a function of stimulus frequency, bandwidth, modulation rate, temporal regularity, duration, envelope shape, and reverberation. The detailed temporal profile of perceptual weights, or "temporal weighting function," can be captured psychophysically and through Monte Carlo simulations based on computational binaural model outputs. Among the results that will be reviewed in this talk are (1) demonstration of sparse temporal sampling of binaural cues at moments of positive envelope slope, (2) impacts of cochlear interference on low frequency bi.