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Title: Study of noise reduction effect of acoustic balconies in high-rise Buildings
Authors: Kan, J
Chan, I
Ng, I
Yeung, M
Tang, SK 
Lo, P
Issue Date: 2015
Source: 44th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2015, 9-12 August 2015 How to cite?
Abstract: For developing a public housing site close to a heavily trafficked road network in Hong Kong, innovative mitigation measures in the form of arc-screen design in front of windows for screening off road traffic noise was initially considered. To study the noise reduction effect, a full-scale 3-storey mock-up building was constructed for determining noise reduction effect of the arc-screen concept design with a simulated road traffic noise source. Upon further consideration of various factors at the later design stage, the arc-screen design concept was finally evolved in the form of a usable acoustic balcony with cantilevered glass panels projecting outwards. Using room acoustics and a diffraction model, noise reduction effect of the balcony up to 6dB was estimated. Post-construction measurement was conducted on site to verify the noise reduction effect of the acoustic balconies. 5dB noise reduction were identified. This paper presents the study approach, mock-up tests and in-situ measurement of the noise reduction effect of the acoustic balcony.
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