Article

Dummy head HRTFs with different head-above-torso orientations (en)

* Presenting author
Day / Time: 19.03.2024, 15:20-16:00
Typ: Poster
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Abstract: As known already, head movements are important in sound source localization and externalization of acoustic events. Head-related transfer functions (HRTFs) are crucial in creating dynamic binaural synthesis for hearing research incorporating head movements. However, most openly accessible databases represent the conjoint movement of the head and torso, which is not how humans naturally move their heads during an auditory event. Only a few databases include independent head movements, such as the FABIAN dummy head.This study includes the generic HRTFs for azimuthal head-above-torso orientations (HATOs) with a step size of 7.5° within the ±90° range. These HRTFs were obtained using a three-dimensional array of 94 loudspeakers. The loudspeakers within the azimuthal ring are positioned at a distance of 2.25 meters from the centre of the anechoic room, where the KEMAR manikin was mounted. We computed the difference between the HRTFs with and without HATOs for corresponding incidence directions relative to the head. Furthermore, we approximated the expected comb filter patterns based on a single reflection originating from a reference point on the shoulder. Subsequently, We compared the variations between the resulting comb filter patterns in scenarios with and without HATOs to the distinctions observed in the measured HRTFs.