Abstract
This paper presents an alternative visualization tool for head-related transfer functions (HRTFs) which represents HRTF data sets as magnitude spatial frequency response surfaces. Qualitative analysis of HRTF data is easier in the spatial domain than in the magnitude frequency domain and allows quick comparisons between different subjects' HRTF sets. In addition, these surfaces exhibit many well-known HRTF-related psychophysical phenomena due to head, torso, and pinna filtering. Finally, these surfaces suggest an interpolation algorithm by which directional transfer functions (DTFs) corresponding to arbitrary spatial locations can be computed from existing DTF measurements at known locations.
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