Generating Personalized Head-Related Transfer Function (HRTF) using Scanned Mesh from iPhone FaceID
Ladda ner
Typ
Examensarbete för masterexamen
Master's Thesis
Master's Thesis
Program
Sound and vibration (MPSOV), MSc
Publicerad
2023
Författare
Liu, Wenkang
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
In recent years, the advancements in virtual reality (VR) and augmented reality
(AR) technologies have been impressive. Binaural audio rendering plays a vital
role in these technologies and is used in various applications such as gaming, video
conferencing, and hearing aids. Providing a high-quality immersive experience in a
virtual environment heavily relies on the spatial audio quality.
The head-related transfer function (HRTF) describes how sound is filtered by the
head, torso, and ears as it travels from the sound source to the listener’s eardrum.
To achieve spatial audio that better matches auditory perception, researchers have
proposed several HRTF personalization methods, including measurement methods,
database matching methods, modeling simulation methods, and anthropometric pa rameter regression methods.
This paper proposes a new modeling simulation method for personalized HRTF
workflow that consists of three parts. Firstly, the participant’s face and torso are
scanned in 3D using the iPhone Face ID component. Secondly, the scanned mesh is
optimized and cleaned using MeshLab and Blender. Finally, the personalized HRTF
is generated using Mesh2hrtf and COMSOL. The effectiveness of the personalized
HRTF is evaluated by comparing the simulated HRTF with the measured HRTF.
Moreover, a test is designed using an adjustable equalizer-based headphone-speaker
control to evaluate the performance of the generated personalized HRTF.
The results demonstrate that the HRTF generated using the FaceID scan grid is
highly comparable to the measured HRTF and produces predictable outcomes in
the listening test. This method shows promise as a low-cost alternative for cus tomizing HRTFs.
Beskrivning
Ämne/nyckelord
spacial audio, auditory perception, psychoacoustics, head-related trans fer functions(HRTF), 3D scanning, mesh optimization, boundary element method(BEM), sound quality