DOI: https://doi.org/10.58874/SAAT.2022.194
Abstract:Rupestrian churches are very special semi-open acoustic spaces. Their acoustic features are strongly characterized by stone materials that (in the present stage) define their boundaries, and by more or less large openings. Consequently, strong frequency dependent effects are observed. The pilgrimage rupestrian church of St. Michael’s in Gravina is one of the largest in Apulia and characterized by large flat surfaces. Acoustic measurements were carried out with a portable equipment. Results are discussed in the paper, pointing out that the combination of geometry and surface finishing determined a re- verberant but yet clear acoustics, with a significant frequency imbalance which emphasizes bass sound (where modal behaviour also appears), and finally an impressive spacious and enveloping sound.
Keywords:rupestrian churches, acoustical measurements, 3D acoustic mapping
Pages:135-138
Paper: