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Measurements of acoustical parameters in the ancient open-air theatre of tyndaris (Sicily, Italy)

Astolfi, A; Bo, E; Aletta, F; Shtrepi, L; (2020) Measurements of acoustical parameters in the ancient open-air theatre of tyndaris (Sicily, Italy). Applied Sciences , 10 (16) , Article 5680. 10.3390/app10165680. Green open access

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Abstract

The emerging field of archaeoacoustics is attracting increasing research attention from scholars of different disciplines: the investigation of the acoustic features of ancient open-air theatres is possibly one of its main themes. In this paper, the outcomes of a measurement campaign of acoustical parameters in accordance with ISO 3382-1 in the ancient theatre of Tyndaris (Sicily) are presented and compared with datasets from other sites. Two sound sources were used (firecrackers and dodecahedron) and their differences were analysed. A very good reproducibility has been shown between the two measurement chains, with differences on average of 0.01 s for reverberation time T_{20}, and less than 0.3 dB for Clarity C_{5}0 and C_{80} and for sound strength. In general, results show that the reverberation time and strength of sound values are relatively low when compared with other theatres because of the lack of the original architectural element of the scaenae frons. When combining this effect with the obvious condition of an unroofed space, issues emerge in terms of applicability of the protocols recommended in the ISO standard. This raises the question of whether different room acoustics parameters should be used to characterise open-air ancient theatres.

Type: Article
Title: Measurements of acoustical parameters in the ancient open-air theatre of tyndaris (Sicily, Italy)
Open access status: An open access version is available from UCL Discovery
DOI: 10.3390/app10165680
Publisher version: https://doi.org/10.3390/app10165680
Language: English
Additional information: © 2020 by the Authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Keywords: open-air ancient theatres; acoustical parameters; ISO 3382-1; firecrackers
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of the Built Environment > Bartlett School Env, Energy and Resources
URI: https://discovery.ucl.ac.uk/id/eprint/10108103
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