In this paper we investigate the perception of sound source distance in relation to static and dynamic binaural systems. Reference data for distance perception in the median plane is first presented, which shows through subjective evaluation that under the test conditions there is no perceived difference in distance perception with sound sources presented at different azimuthal angles to the head. This data forms the hypothesis that head movements do not play an important role in auditory perception of source distance in real rooms. This is verified in relation to binaural systems through comparison of distance perception of binaural recordings versus head-tracked binaural rendering. The results also demonstrate that non-individualised head-related transfer functions can be effective for distance perception when compared to real sources.
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