Three-dimensional Sound Image Localization by Interaural Differences and the Median Plane HRTF Part Ⅱ. Effects of ITD and ILD on Perception of Lateral Angle

摘要

In this paper, localization tests were performed to examine the effect of each interaural difference on the perception of the lateral angle. When the HRTF on the median plane and ITD were simulated, subjects perceived both of lateral and vertical angles accurately. On the other hand, when the HRTF on the median plane and ILD were simulated, the subjects' responses did not agree with the simulated direction. They perceived lateral angles near the median plane regardless of the simulated lateral angles. Moreover, the listeners sometimes perceived unnatural sound images. These results mean that ITD is dominant on the perception of the lateral angle. This agrees with the findings by Wightman et al.