Abstract
It is well known that the dynamic cues caused by head turning and pinna-based spectral cue are vital to sound source localization, especially for front-back and vertical localization. A series of localization experiment is carried out via virtual auditory display to explore the relative contribution of dynamic and spectral cues to localization. Virtual sources at different intended spatial locations are recreated using various combinations with noise stimuli at full audio or 4 kHz-lowpass frequency ranges, individualized HRTFs or non-individual HRTFs derived from KEMAR and spherical-head model, and static or dynamic binaural synthesis. Furthermore, statistical analyses are performed on localization performance in terms of the percentage of front-back and up-down confusion as well as the mean angle error in virtual source localization. Primary results indicate that both dynamic and spectral cues contribute to front-back and vertical localization; whereas dynamic cue contributes more to front-back localization, while individualized spectral cue at high frequency above 4 kHz contributes more to vertical localization. Dynamic and high-frequency individualized spectral cues are also helpful to reduce the angle error in localization. [Work supported by the National Natural Science Foundation of China,11174087, 50938003, and State Key Lab of Subtropical Building Science, South China University of Technology.]
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