Collaborative Mobile Instruments in a Shared AR Space: a Case of ARLooper

This paper presents ARLooper, an augmented reality mobile interface that allows multiple users to record sound and perform together in a shared AR space. ARLooper is an attempt to explore the potential of collaborative mobile AR instruments in supporting non-verbal communication for musical performances. With ARLooper, the user can record, manipulate, and play sounds being visualized as 3D waveforms in an AR space. ARLooper provides a shared AR environment wherein multiple users can observe each other's activities in real time, supporting increasing the understanding of collaborative contexts. This paper provides the background of the research and the design and technical implementation of ARLooper, followed by a user study.