As libraries evolve in the recent years into multifunctional environments that support study, collaboration, and cultural activities, effectively managing their indoor sound environments has become increasingly important. In such settings, noise is not only a potential source of distraction but also a factor that may influence cognitive performance and user’s comfort. These challenges are further amplified in heritage buildings, where architectural interventions are often limited. This study examines the acoustic environment of the New Civic Central Library of Torino, a historically protected structure with a volume of approximately 160,000 m³ and a reverberation time of around 6 seconds at mid frequencies.