Subwoofer array design for optimal performance and minimal noise pollution in the Roman theatre of Italica, Spain

Conference paper

Kopplin, C., Gomez-Agustina, L. and Grilo Bensusan, A. (2023). Subwoofer array design for optimal performance and minimal noise pollution in the Roman theatre of Italica, Spain. Institute of Noise Control Engineering (INCE). https://doi.org/10.3397/in_2022_0333
AuthorsKopplin, C., Gomez-Agustina, L. and Grilo Bensusan, A.
TypeConference paper
AbstractSubwoofer arrays are widely used in live sound events. However, the performance of sound systems and the generated environmental noise pollution in the vicinity of Roman theatres is not well researched and documented. The investigation aimed to determine the most suitable subwoofer array configuration for an outdoor Roman theatre according to their low frequency coverage across the audience area and overspill on nearby residential areas. Performance suitability was determined by measuring the overall sound pressure (dBA) and spectrum levels of the arrays within the audience area at several locations representative of nearby residential areas. The Array Performance Rating (APR) was calculated for each array configuration to complement performance assessments. Results showed a notorious difference between coupled and uncoupled arrays, as well as between ground-based and flown subwoofer configurations. It was proven that the flown point source array offered overall less sound pressure levels and spectral variability in the audience plane and it caused the least environmental noise pollution. The conclusions drawn from this study can provide valuable guidance applicable to future sound system deployments and reconstruction projects of ancient outdoor theatres of similar architectural and environmental characteristics.
Keywordsamphitheatre, roman, subwoofer array, outdoor sound system,
Year2023
JournalINTER-NOISE and NOISE-CON Congress and Conference Proceedings
PublisherInstitute of Noise Control Engineering (INCE)
Journal citation265 (5), pp. 2331-2341
ISSN0736-2935
Digital Object Identifier (DOI)https://doi.org/10.3397/in_2022_0333
Web address (URL)https://internoise2022.org/
Accepted author manuscript
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File Access Level
Open
Publication dates
Online01 Feb 2023
Print01 Feb 2023
Publication process dates
Accepted31 May 2022
Deposited30 Jun 2022
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