Digital Twin of a Head and Torso Simulator: Validation of Far-Field Head-Related Transfer Functions with Measurements

Hajarolasvadi S, Essink B, Hoffmann PF, Ng A, Skov U, Prepeli?? S. Digital Twin of a Head and Torso Simulator: Validation of Far-Field Head-Related Transfer Functions with Measurements. In: AES Conference: AES 2022 International Audio for Virtual and Augmented Reality Conference. Audio Engineering Society; 2022. Paper 25. Available from: https://aes.org/publications/elibrary-page/?id=21855

@inproceedings{Hajarolasvadi2022_21855,
  author = {Hajarolasvadi, Setare and Essink, Brittany and Hoffmann, Pablo F. and Ng, Alan and Skov, Ulrik and Prepeli??, Sebastian},
  title = {{Digital Twin of a Head and Torso Simulator: Validation of Far-Field Head-Related Transfer Functions with Measurements}},
  booktitle = {AES Conference: AES 2022 International Audio for Virtual and Augmented Reality Conference},
  note = {Paper 25},
  year = {2022},
  month = aug,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=21855}
}

TY  - CPAPER
TI  - Digital Twin of a Head and Torso Simulator: Validation of Far-Field Head-Related Transfer Functions with Measurements
AU  - Hajarolasvadi, Setare
AU  - Essink, Brittany
AU  - Hoffmann, Pablo F.
AU  - Ng, Alan
AU  - Skov, Ulrik
AU  - Prepeli??, Sebastian
T2  - AES Conference: AES 2022 International Audio for Virtual and Augmented Reality Conference
M1  - Paper 25
PY  - 2022
DA  - 2022/08/06
UR  - https://aes.org/publications/elibrary-page/?id=21855
PB  - Audio Engineering Society
LA  - en
AB  - Developing high-fidelity digital twins of head and torso simulators (HATS) provides us with reliable simulations that could replace tedious measurements and facilitate the rapid and efficient design of AR/VR products. In this paper, we aim to develop and validate a digital twin of the Brüel and Kjær high-frequency HATS Type 5128. The digital twin uses an accurate scan of the HATS and captures the behavior of the ear simulator (Type 4620), including the full average human ear canal geometry and a termination coupler emulating an average eardrum impedance response. As a natural first step, finite-element acoustic simulations in COMSOL are set up to validate the far-field head-related transfer function (HRTF) with measurements for three spatial directions in the horizontal plane. To increase the confidence in the validation results, a rough convergence study is conducted for the simulations, and measurements are compared against the manufacturer’s reference measurements. Finally, we show how validation studies may be improved by investigating some of the commonly-used modeling assumptions.
ER  -