A Multi-User Interface for Real-Time Intonation Monitoring in Music Ensembles

Intonation is a crucial aspect of musical ensemble performance. Yet maintaining accurate tuning among multiple musicians remains a persistent challenge, particularly in variable rehearsal and live performance settings. While intonation monitoring systems have been explored previously, most focus on single-channel processing, lack real-time capabilities, or do not support ensemble-specific functionality. In this work, we explore the possibilities of a real-time, multi-user intonation monitoring system specifically developed for music ensembles. It provides immediate, role-specific feedback to both musicians and conductors, supporting collaborative rehearsal practices and ensemble tuning processes. We conducted an initial experiment in a rehearsal setting with four musicians and a conductor, focusing on a qualitative evaluation of usability, interpretability, and musical relevance. The preliminary findings indicate that the system offers clear and practical feedback, promotes awareness of intonation, and has the potential to enhance interaction and facilitate communication within the ensemble.