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Appl. Sci. 2016, 6(12), 429;

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

Engineering Department, University of Ferrara, 44122 Ferrara FE, Italy
School of Architecture, University of Sheffield, Sheffield S10 2TN, UK
Industrial Engineering Department, University of Florence, 50139 Firenze, Italy
Author to whom correspondence should be addressed.
Academic Editor: Gino Iannace
Received: 10 October 2016 / Revised: 27 November 2016 / Accepted: 5 December 2016 / Published: 14 December 2016
(This article belongs to the Special Issue Noise and Vibration Control in the Built Environment)
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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. View Full-Text
Keywords: building shading devices; insertion loss; psychoacoustics; loudness; roughness; sharpness building shading devices; insertion loss; psychoacoustics; loudness; roughness; sharpness

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Zuccherini Martello, N.; Aletta, F.; Fausti, P.; Kang, J.; Secchi, S. A Psychoacoustic Investigation on the Effect of External Shading Devices on Building Facades. Appl. Sci. 2016, 6, 429.

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