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A Psychoacoustic Investigation on the Effect of External Shading Devices on Building Facades

Martello, NZ; Aletta, F; Fausti, P; Kang, J; Secchi, S; (2016) A Psychoacoustic Investigation on the Effect of External Shading Devices on Building Facades. Applied Sciences , 6 (12) , Article 429. 10.3390/app6120429. Green open access

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Abstract

Due to energetic and natural lighting factors, building facades often present external shading devices, but the acoustic properties of such devices have not yet been well studied. This study was carried out using a full-scale model of a portion of a shading device, in a semi-anechoic chamber, using traditional and sound absorbing louvres. The psychoacoustic effects produced by the shading system were evaluated through comparisons between averaged values of loudness, roughness and sharpness levels, as well as sound pressure levels as reference. Results highlighted that the sound absorbing shading device offers good attenuation in terms of loudness, roughness and sound pressure level, with a small reduction in sharpness. The traditional shading system studied does not efficiently reduce the analysed parameters, or even worsens the situation. Several analyses of variance were carried out, one for each situation studied. The sound source position and the louvres’ tilt angle both produce statistically significant effects on almost all of the variations of the parameters studied. The analyses of the partial eta squared factors highlighted that source position and louvre tilt angle affect the variations of the parameters studied to a different degree in respect of the two types of louvres.

Type: Article
Title: A Psychoacoustic Investigation on the Effect of External Shading Devices on Building Facades
Open access status: An open access version is available from UCL Discovery
DOI: 10.3390/app6120429
Publisher version: https://doi.org/10.3390/app6120429
Language: English
Additional information: Copyright © 2016 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: building shading devices; insertion loss; psychoacoustics; loudness; roughness; sharpness
UCL classification: UCL
UCL > Provost and Vice Provost Offices
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/10043922
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