Journal
BUILDINGS
Volume 13, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/buildings13041061
Keywords
acoustics; church; church design; chancel; chancel geometry; room shape; simulation; speech intelligibility; reverberation time
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This study investigates the impact of the chancel and nave on the acoustic performance of churches. Simulations of four churches with different chancel geometries were conducted, and the results show that both chancel availability and geometry significantly affect the acoustics of churches. Chancel availability mainly influences speech intelligibility, while circular chancels have a more positive effect on speech intelligibility compared to polygonal and rectangular chancels.
Two significant spaces define the soundscape of worship in a church: chancel and nave. The chancel is a space with the primary function of a sound source, where the preachers and choir are often seated during church services. Church design and layout have changed throughout history based on the functional needs of its target congregation. Some modern churches have omitted the chancel to fit contemporary design aesthetics. The main aim of this study is to investigate the relationship between the chancel and the acoustics performance of a church. Four churches with varying geometries of circular, polygonal, and rectangular chancels were selected for this study. Two simulations of varying chancel characteristics of chancel availability and chancel geometry were conducted. The recorded speech intelligibility index (STI) and reverberation time (RT) results indicate that chancel availability and geometry significantly affect churches' acoustic performance. The simulation of the chancel availability mainly affected speech intelligibility, where the models with chancels recorded a higher STI than the models without chancels. In terms of chancel geometry, the results of the STI of the circular chancels were more encouraging than the polygonal and rectangular chancels.
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