The acoustic analysis provides additional information on building tradition and related\nindoor practice that includes sound, thus deepening our understanding of architectural heritage.\nIn this paper, the sound field of the Orthodox medieval church Lazarica (Krusevac city, Serbia) is\nexamined. Lazarica is a representative of Morava architectural style, developed in the final period\nof the Serbian medieval state, when also the chanting art thrived, proving the importance of the\naural environment in Serbian churches. The church plan is a combination of a traditional inscribed\ncross and a triconch. After the in situ measurement of acoustic impulse response using EASERA\nsoftware, we built a computer model in the acoustic simulation software EASE and calibrated it\naccordingly. Following the parameters (reverberation time (T30), early decay time (EDT) and speech\ntransmission index (STI)), we examined the acoustic effect of the space occupancy, central dome\nand the iconostasis. In all the cases, no significant deviation between T30 and EDT parameter was\nobserved, which indicates uniform sound energy decay. Closing the dome with a flat ceiling did not\nshow any significant impact on T30, but it lowered speech intelligibility. The height of iconostasis\nshowed no significant influence on the acoustics of Lazarica church.
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