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Proceedings of the 10th Convention of the European Acoustics Association Forum Acusticum 2023 Politecnico di Torino Torino, Italy September 11 - 15, 2023 |
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Abstract Dynamic cues due to self-motion are important in the perception of sound, as they allow individuals to increase their ability to localise sound sources. In a previous study, Gaveau et al. reported how spontaneous head movements improved 3D sound localisation by comparing static vs. active listening postures. They playback real sound sources with a portable loudspeaker placed at different positions relative to the listener’s head. This contribution presents a partial replication of that experiment in a virtual environment using the 3D Tune-In Toolkit, an open-source C++ library for real-time binaural audio rendering. The anechoic acoustic path was rendered using a generic HRTF of a dummy head from the ARI database, and the reverberation of the room was reproduced with first-order Ambisonics-encoded BRIRs measured with an identical dummy head. The same room was also modelled in 3D for visual rendering. The results obtained in the virtual test carried out with headphones show findings comparable to those obtained by Gaveau et al. with real loudspeakers, enabling the validation of the virtual version of the experiment, although some differences appear regarding certain conditions. In addition, the importance of training in the virtual environment has been explored, indicating that its influence on performance is significant. |