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Effect of Individualized Head-Related Transfer Functions on Distance Perception in Virtual Reproduction for a Nearby Source

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Head-related transfer function (HRTF) is affected by anatomic parameters of an individual subject, and thus it is worthy noticing in virtual reproduction based on the HRTF signal processing. This work aims to find out, in the virtual reproduction system through a pair of headphones, the effect of individual cue of HRTF on auditory distance perception for a nearby sound source by means of psychoacoustic experiments. The individualized HRTFs and non-individualized HRTFs of 6 subjects, at 7 distances ranging from 0.2 m to 1.0 m and 5 lateral azimuths ranging from 45? to 135? in the horizontal plane, were convolved with white noise and used as stimulus signals. The results of psychoacoustic experiments indicate that the individual cue of HRTF has non-significant effect on auditory distance perception of nearby sources, and thus it could be unworthy of much concern in virtual reproduction for most of the occasions.

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