Design and User Experience Evaluation of OnSori Sphere: A Spatial-Hearing XR Rehabilitation System on Apple Vision Pro

Proceedings of HCI Korea 2026 (HCIK '26)

Hayoung Jang, Chanyoung Hong, Eunnarae Song, Yunseo Choi, Jisoo Kim, Yoenhwi Kim, Hojun Lee, Seunghyeok Hong, Hyojung Jung

Abstract

This study presents OnSori Sphere, an Apple Vision Pro–based auditory rehabilitation system designed for XR and spatial computing environments, and evaluates its usability and potential effectiveness. The system supports cochlear implant recipients and individuals with hearing loss through 360-degree environmental sound localization, personalized hearing-threshold calibration, and integrated audiovisual feedback using gesture-based interaction and spatial audio. A usability study with 16 participants yielded a mean System Usability Scale score of 55.47, with the initial learning curve and headset comfort identified as major barriers. Nevertheless, participants rated XR immersion (M = 4.06), the appropriateness of multisensory feedback (M = 4.19), and willingness to engage in long-term training (M = 4.25) positively. Open-ended responses highlighted intuitive sound localization and gamified interaction as key strengths, while improved spatial sound separation and onboarding were identified as areas for further development.

Role Contributed to the UX/UI design and user study of the OnSori Sphere system.