Acoustics of Sisto V Hall in Naples: A Precious Barrelled Vaulted Room

Sisto $\mathbf{V}$ Hall in Naples is in the list of heritage buildings, whose value is acknowledged for its historical significance, beside its use for live events, including musical performances by ensembles and small groups. Acoustic measurements revealed a reverberation time of approximately 4.5 s at mid frequencies, resulting in poor speech clarity. This is primarily due to the presence of reflective surfaces, as the walls and ceilings are plastered, and the floors are tiled. The optimization of the overall acoustics for gatherings and conferences has been carried out by proposing an acoustic design intervention.