This paper contributes to building a standard process of research and development (R&D) for new user experiences (UX) in metaverse services. We tested this R&D process on a new UX proof of concept (PoC) for Meta Quest head-mounted display (HMDs) consisting of a school-life karaoke experience with the hypothesis that it is possible to design the avatars with only the necessary functions and rendering costs. The school life metaverse is a relevant subject for discovering issues and problems in this type of simultaneous connection. To qualitatively evaluate the potential of a multi-person metaverse experience, this study investigated subjects where each avatar requires expressive skills. While avatar play experiences feature artistic expressions, such as dancing, playing musical instruments, and drawing, and these can be used to evaluate their operability and expressive capabilities qualitatively, the Quest's tracking capabilities are insufficient for full-body performance and graphical art expression. Considering such hardware limitations, this study evaluated the Quest, focusing primarily on UX simplicity using AI Fusion techniques and expressiveness in instrumental scenes played by approximately four avatars. This research reported methods for multiuser metaverse communication and its supporting technologies, such as head-mounted devices and their graphics performance, special interaction techniques, and complementary tools and the importance of PoC development, its evaluation, and its iterations. The result is remarkable for further research; these expressive technologies in a multi-user context are directly related to the quality of communication within the metaverse and the value of the user-generated content (UGC) produced there.

翻译：摘要：本文致力于为元宇宙服务中的新型用户体验（UX）研发构建标准化流程。我们通过Meta Quest头戴式显示器（HMD）上的新型用户体验概念验证（PoC）测试了这一研发流程，该PoC包含校园生活卡拉OK体验，其假设是：仅需必要功能与渲染成本即可设计虚拟化身。校园生活元宇宙是探索此类同步连接中问题与挑战的相关课题。为定性评估多人元宇宙体验的潜力，本研究调查了每个虚拟化身都需要表现技能的课题。尽管虚拟化身扮演体验包含舞蹈、乐器演奏及绘画等艺术表现，且可据此定性评估其可操作性与表现能力，但Quest的追踪能力不足以支撑全身表演及图形艺术表达。考虑到此类硬件限制，本研究重点评估了Quest在利用AI融合技术简化用户体验、以及约四个虚拟化身演奏乐器场景中的表现力。本研究报告了多用户元宇宙通信方法及其支撑技术（如头戴式设备及其图形性能、特殊交互技术与辅助工具），并阐述了PoC开发、评估及迭代的重要性。这一成果对后续研究具有重要意义：多用户语境下的这些表现技术直接关系到元宇宙内通信质量以及用户生成内容（UGC）的价值。