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DEVELOPMENT OF A VIRTUAL REALITY-BASED SOUND LOCALIZATION ASSESSMENT SYSTEM: A NOVEL APPROACH USING UNITY AND AWS
1LABORATORY OF BRAIN & COGNITIVE SCIENCES FOR CONVERGENCE MEDICINE, HALLYM UNIVERSITY COLLEGE OF MEDICINE 2EAR AND INTERACTION CENTER, DOHEUN INSTITUTE FOR DIGITAL INNOVATION IN MEDICINE (D.I.D.I.M.) 3DEPARTMENT OF SPEECH PATHOLOGY AND AUDIOLOGY, GRADUATE SCHOOL, HALLYM UNIVERSITY 4DEPARTMENT OF OTORHINOLARYNGOLOGY-HEAD AND NECK SURGERY, HALLYM UNIVERSITY COLLEGE OF MEDICINE 5GRADUATE SCHOOL OF CULTURE TECHNOLOGY, KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
SEUNG-IK JEON, SEUNG-IK JEON1, 2, 3, HAEUN OH5, SUNGYOUNG KIM5, JI-HYE HAN1, 2, JI-HYUN LEE1, 2, HYO-JEONG LEE1, 2, 4
¸ñÀû: The present study aimed to develop an innovative Virtual Reality (VR)- based sound localization assessment tool, utilizing the Unity engine and Amazon Web Services (AWS). The aim of this development was to overcome the logistical and financial constraints posed by traditional sound localization tests, which require extensive infrastructure such as anechoic chambers and multi-channel audio systems, thereby providing a more accessible and practical solution for clinical settings. ¹æ¹ý:Utilizing the Unity game engine, a virtual environment was created to mimic the conditions of conventional sound localization tests. Participants engaged with this environment using VR headsets and stereo earphones. The protocol of the assessment involved auditory stimuli being presented from various spatial locations within the VR setup. Participants were tasked with identifying the origins of these sounds using a controller, with their responses recorded for analysis. The testing procedure included two formats: a horizontal localization test with seven virtual speakers at 30-degree intervals and a frontal localization test featuring nine speakers in a 3x3 grid. The system compatible with Android-based VR devices, audio sources, managed through AWS, offer flexibility and easy modification. Additionally, test results are stored and processed on AWS for subsequent analysis. °á°ú:The development phase has successfully concluded with a fully functional VR-based sound localization test. This system, operational on a range of Android-based VR systems, demonstrates versatility and adaptability for diverse clinical and research settings. Through AWS, modification of the placement of speakers and the stimuli is doable, making it easier to personalize testing environments. Its potential as a feasible alternative to traditional sound localization methods is promising, particularly given the strong clinical need. °á·Ð:The VR-based sound localization test is not only feasible but also advantageous in assessing directional hearing in cases of asymmetric hearing loss. This innovative approach markedly reduces the need for expensive and space-consuming infrastructure typically associated with traditional sound localization tests. Consequently, it holds significant potential for widespread clinical adoption, offering a practical, efficient, and more accessible means for evaluating and understanding hearing impairments.


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