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

Article English OPEN
Martello, N. Z. ; Aletta, F. ; Fausti, P. ; Kang, J. ; Secchi, S. (2016)
  • Publisher: MDPI AG
  • Related identifiers: doi: 10.3390/app6120429
  • Subject: building shading devices, insertion loss, psychoacoustics, loudness, roughness, sharpness, facade | building shading devices; insertion loss; psychoacoustics; loudness; roughness; sharpness

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.
  • References (36)
    36 references, page 1 of 4

    1. Fritschi, L.; Brown, A.L.; Kim, R.; Schwela, D.; Kephalopolous, S. Burden of Disease from Environmental Noise-Quantification of Healthy Life Years Lost in Europe; The World Health Organization, Regional Office for Europe: Copenhagen, Denmark, 2011.

    2. Grubesa, S.; Jambrosic, K.; Domitrovic, H. Noise barriers with varying cross-section optimized by genetic algorithms. Appl. Acoust. 2012, 73, 1129-1137. [CrossRef]

    3. Koussa, F.; Defrance, J.; Jean, P.; Blanc-Benon, P. Acoustic performance of gabions noise barriers: Numerical and experimental approaches. Appl. Acoust. 2013, 74, 189-197. [CrossRef]

    4. Oldham, D.J.; Egan, C.A. A parametric investigation of the performance of multiple edge highway noise barriers and proposals for design guidance. Appl. Acoust. 2015, 96, 139-152. [CrossRef]

    5. Van Renterghem, T.; Attenborough, K.; Maennel, M.; Defrance, J.; Horoshenkov, K.; Kang, J.; Bashir, I.; Taherzadeh, S.; Altreuther, B.; Khan, A.; et al. Measured light vehicle noise reduction by hedges. Appl. Acoust. 2014, 78, 19-27. [CrossRef]

    6. Van Renterghem, T.; Forssen, J.; Attenborough, K.; Jean, P.; Defrance, J.; Hornikx, M.; Kang, J. Using natural means to reduce surface transport noise during propagation outdoors. Appl. Acoust. 2015, 92, 86-101. [CrossRef]

    7. Hosanna-Greener-Cities. Available online: www.greener-cities.eu (accessed on 14 September 2016).

    8. Tang, S.K. Noise screening effects of balconies on a building facade. J. Acoust. Soc. Am. 2005, 118, 213-221. [CrossRef] [PubMed]

    9. El Dien, H.H.; Woloszyn, P. The acoustical influence of balcony depth and parapet form: Experiments and simulations. Appl. Acoust. 2005, 66, 533-551. [CrossRef]

    10. Lee, P.J.; Kim, Y.H.; Jeon, J.Y.; Song, K.D. Effects of apartment building facade and balcony design on the reduction of exterior noise. Build. Environ. 2007, 42, 3517-3528. [CrossRef]

  • Metrics
    No metrics available
Share - Bookmark