Two listening experiments were performed to investigate the influence of different trajectories of head and source movements on perceived externalization of a frontal sound source. In the first listening test, virtual moving sound sources with seven various trajectories were presented over headphones, while subjects’ heads remained stationary. In the second test, subjects were asked to rotate their heads on three predefined trajectories coupled with real-time binaural rendering, while the simulated virtual sound source was kept stationary. After each presentation, subjects should rate the degree of perceived externalization. Results suggested that large head and source movements can improve perceived externalization, except source movements in the front/back direction. In addition, small source or head movements do not have the influence on externalization.
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