Abstract
Differential sensitivity to the velocity of an auditory target moving in the vertical plane and the effect of the direction of motion and of the signal spectrum on the differential thresholds are studied. The motion of the auditory target was produced by a successive switching of several loudspeakers placed on an arc. It was found that an increase in the velocity in both opposite directions (from front to rear and from rear to front) leads to a monotonic increase in the average absolute differential velocity thresholds. Regression lines obtained as a linear approximation of the average absolute differential velocity thresholds do not differ significantly. For a signal whose spectrum consists of frequencies from 4 to 12.5 kHz, the absolute differential velocity thresholds are significantly lower than those for a signal occupying a frequency band from 0.25 to 4 kHz.
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