Abstract
The three-dimensional, time-variant output of a computational model of the human auditory system was investigated with the aim of extracting perceptually patterns as relevant to spatial impression. To this end, the same stimuli with which the model was excited were also presented to human listeners which evaluated (i) the auditory source width (ASW), i.e., the horizontal extent of the auditory event, and (ii) the listener envelopment (LEV), i.e., the amount of envelopment by the auditory event. The listeners had to be trained beforehand as the discrimination of source- and room-related parameters of auditory events is not a common task to them. To allow for natural localization and to enable interactive listening, the stimuli were presented through head-tracked headphones. Trained listeners appeared to produce consistent results when depicting auditory objects on a compass-rose-shaped plane, where they had to mark the position and broadening of the auditory event(s) by the position(s) and length(s) of straight lines, and the envelopment by the position and size of an ellipse.
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