Determining the sound power of musical ensembles in realistic performance conditions

The acoustic optimization of performance spaces for musical ensembles depends on achieving suitable sound levels to ensure auditory balance and performer comfort. Accurate sound power data for individual instruments and ensembles, particularly under realistic performance conditions, are essential for this purpose. While prior studies have largely relied on laboratory-based measurements, these results may not fully capture the dynamic, non-stationary nature of live performances or the influence of performance space acoustics. This study explores the extent to which reliable sound power measurements can be obtained in realistic conditions, employing both natural and artificial excitation signals. By addressing challenges, such as varying musical intensities and the acoustic variability of performance spaces, the research bridges the gap between controlled experiments and real-world scenarios. Using the ISO 3743-1 framework, sound power statistics were determined for various chamber music ensembles.