Spatial audio personalization of head-related transfer functions using mobile-to-head audio recordings

By using mobile-to-head audio measurements and anthropometric refinement, the method addresses the challenge of generating accurate personalized HRTFs, enhancing binaural spatial audio experiences for individual users.

WO2025259368A1 Publication Date: 2025-12-18QUALCOMM INC
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Patent Information

Application Number
PCT/US2025/025232
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-06-14
Filing Date
2025-04-17
Publication Date
2025-12-18

AI Technical Summary

Technical Problem

Existing spatial audio technologies face challenges in accurately generating personalized Head-Related Transfer Functions (HRTFs) for individual users due to anthropometric differences in ear and head shapes, leading to suboptimal binaural spatial audio experiences.

Method used

A method for generating personalized HRTFs using mobile-to-head audio measurements, combining near-field HRTFs determined from mobile-to-ear audio measurements with far-field HRTFs extrapolated from anthropometric features, and refining these using vision-based and anthropometry-based techniques to identify the best matching candidate HRTF.

Benefits of technology

This approach enables more accurate and perceptually convincing binaural spatial audio delivery by personalizing HRTFs based on individual user anatomy, improving the spatial audio experience without the need for extensive laboratory measurements.

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Abstract

Systems and techniques are provided for processing audio data. For example, a process can include determining a set of near-field Head-Related Transfer Functions (HRTFs) corresponding to a user, based on a plurality of audio measurements each obtained using a respective measurement position at a near-field measurement distance. A set of far-field HRTFs corresponding to the user can be generated based on the set of near-field HRTFs. The set of far-field HRTFs can be compared to one or more candidate far-field HRTFs obtained based on anthropometric features corresponding to the user. An individualized HRTF can be determined for the user as a candidate far-field HRTF of the one or more candidate far-field HRTFs having minimum spectral differences from the set of far-field HRTFs at corresponding measurement positions.
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