Article

Technical evaluation of an easy-to-use head-related transfer function measurement system (vor Ort)

* Presenting author
Day / Time: 24.03.2022, 09:20-09:40
Room: 47-03
Typ: Regulärer Vortrag
Session: Binauraltechnik
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Abstract:

Measurements of individual Head-Related Transfer Functions (HRTF) are generally of great interest, whether to improve the quality of binaural reproduction or to obtain ground-truth data for further research on advanced individualization methods. However, conventional impulse response measurements of individual HRTF datasets are demanding in terms of measurement time and equipment.To simplify this process, we recently presented an easy-to-use measurement system that can be used in regular rooms. The provided open-source measurement application requires only a stationary loudspeaker, a pair of in-ear microphones and a commercially available tracking system. This way, subjects can measure their individual full-spherical HRTF dataset by unsupervised head movements for an arbitrary number of directions. In this work, we provide a technical evaluation of various specific aspects inherent to this type of measurement system. First, since the subject has to perform extensive body movements for certain measurement directions, the head-above-torso orientation varies between measurements. Second, as the head position is not constrained to the speaker axis, the radiation pattern of the employed loudspeaker can affect the measurements. Finally, we address the influence of the room acoustics and measurement equipment since the measurement system should provide predictable results independent of the conditions of a practical measurement environment.

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