Contribution

Perceptual Evaluation of a Parametric HRTF Simulation Method for Dynamic Binaural Synthesis

Authors

* Presenting author
Day / Time: 18.03.2025, 15:20-16:00
Room: Hall E, Poster Island G
Typ: Poster
Session: Virtual Acoustics & Binaural Technologies (Poster Island G)
Information: The posters will be exhibited in Hall E north from Tuesday to Thursday, sorted by thematic context in the poster island indicated in the session title. The poster session at the specified time offers the opportunity to enter into discussion with the authors.
Abstract: Binaural audio reproduction over headphones is an essential component for the reproduction of virtual acoustic scenes in laboratory experiments. For studies in which localisation plays a role, it is important that spatial hearing over headphones is supported with sufficient accuracy for the intended application. This work presents a perceptual analysis of a parametric binaural head-related transfer function (HRTF) simulation method [1], which is optimised for high computational efficiency when used with small block sizes in real-time applications. However, in its current parametrisation, stimuli from the frontal hemisphere were found to be perceived at more lateral positions than intended. We compare subjective localisation performance with different parametrisations to disentangle the effects of interaural time differences (ITDs) and interaural level differences (ILDs), as well as the influences of room acoustic simulation and head movements. The results will provide valuable insights for improving the rendering method, ultimately leading to more accurate and immersive virtual acoustic scenes in interactive laboratory experiments.[1] Schwark, F., Schädler, M. R. & Grimm, G. (2022). Data-driven Optimization of Parametric Filters for Simulating Head-Related Transfer Functions in real-time Rendering Systems. In F. Christensen & R. Ordonez (Eds.), EUROREGIO BNAM2022 (pp. 1–10).