Congresos últimos 10 años

Alonso, A.; Martellotta, F. (2015, 12-16 julio). The effect of festive decorations on church acoustics from a temporal design perspective.

CONGRESO: Proc. of the 22th International Congress of Sound and Vibration, Carácter internacional

PÁGINAS: 1-8.

CIUDAD: Florencia (Italia)

ABSTRACT:
Different methods of decoration were used in worship spaces during the celebration of major events which were hosted inside them throughout history. In particular, addition of textiles was one of the most important components of ephemeral architecture of churches on which the preparation of the interior space was based. The presence of various kinds of fabrics was a singular measure which was likely to affect the acoustics of the space, mainly depending on the placement, properties and amount of the material. Among the diverse ways of arrangement, one of the most interesting and, at the same time, challenging from the acoustic point of view was when textiles were hung in the middle of the space, dividing naves or side chapels. In fact, tapestries show significant acoustic variability depending on their distance from rigid surfaces and on their absorption and transmission coefficients. In order to investigate on the effect that this intervention may have on church acoustics, simulation by means of geometrical acoustic modelling can be a very useful tool to investigate such changes. Consequently, a computer model of an idealized church having a typical basilica plan was built using CATT Acoustic software and hung tapestries were located between naves inside the model. Acoustic properties of these textiles were first determined in scale-down models in order to characterize both their absorption and transmission properties. Then, after checking the agreement between scaled-down and computer models, the effect of a “full” installation (also including occupancy) was investigated using geometrical acoustic model so that binaural IRs could be determined. Finally, the effect of inclusion of free hanging textiles and draperies on both monaural and binaural parameters as well as on temporal parameters is discussed.

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