In order to present three-dimensional virtual sound sources via headphones, head-related transfer functions (HRTFs) can be integrated in a spatialization algorithm. However, the spatial perception in binaural virtual acoustics may be limited if the applied HRTFs differ from those of the actual listener. Thus, SOFAlizer, a spatialization engine allowing to use and switch on-the-fly between listener-specific HRTFs stored in the spatially oriented format for acoustics (SOFA) was implemented for the Unity game engine. With that plugin, virtual-reality headsets can benefit from the individual HRTF-based spatial sound reproduction.
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