# HRTF Field: Unifying Measured HRTF Magnitude Representation with Neural Fields

Source: [HRTF Field: Unifying Measured HRTF Magnitude Representation with Neural Fields](<https://www.sota2.com/research/paper/68fa6e941e209131cea40d38>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-26T01:01:51.507Z

Authors: You Zhang, Yuxiang Wang, Zhiyao Duan

Published: 2022-10-27T06:05:20.000Z

## Abstract

Head-related transfer functions (HRTFs) are a set of functions describing the spatial filtering effect of the outer ear (i.e., torso, head, and pinnae) onto sound sources at different azimuth and elevation angles. They are widely used in spatial audio rendering. While the azimuth and elevation angles are intrinsically continuous, measured HRTFs in existing datasets employ different spatial sampling schemes, making it difficult to model HRTFs across datasets. In this work, we propose to use neural fields, a differentiable representation of functions through neural networks, to model HRTFs with arbitrary spatial sampling schemes. Such representation is unified across datasets with different spatial sampling schemes. HRTFs for arbitrary azimuth and elevation angles can be derived from this representation. We further introduce a generative model named HRTF field to learn the latent space of the HRTF neural fields across subjects. We demonstrate promising performance on HRTF interpolation and generation tasks and point out potential future work.

## Recorded benchmark results

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

- [HRTF Upsampling on HUTUBS simulation](<https://www.sota2.com/research/sota/hrtf-upsampling-on-hutubs-simulation.md>): HRTF upsampling; HUTUBS simulation; LSD: 6.1.

- [HRIR spatial up-sampling on SONICOM free-field HRIRs (test)](<https://www.sota2.com/research/sota/hrir-spatial-up-sampling-on-sonicom-free-field-hrirs-test.md>): HRIR spatial up-sampling; SONICOM free-field HRIRs (test); ITD Error (E): 11.8.

## Original sources and implementation

[Original paper](<https://arxiv.org/abs/2210.15196>)

[PDF](<https://arxiv.org/pdf/2210.15196.pdf>)