Full scale model investigation on the acoustical protection of a balcony-like façade device (L)

The acoustical insertion losses produced by a balcony-like structure in front of a window are examined experimentally. The results suggest that the balcony ceiling is the most appropriate location for the installation of artificial sound absorption for the purpose of improving the broadband insertio...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2011-08, Vol.130 (2), p.673-676
Main Authors: Tong, Y. G., Tang, S. K., Yeung, M. K. L.
Format: Article
Language:English
Subjects:
Absorption
Acoustics
Acoustics - instrumentation
Architectural acoustics
Construction Materials
Equipment Design
Exact sciences and technology
Facility Design and Construction
Fundamental areas of phenomenology (including applications)
Noise, Transportation - prevention & control
Physics
Sound Spectrography
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Summary:The acoustical insertion losses produced by a balcony-like structure in front of a window are examined experimentally. The results suggest that the balcony ceiling is the most appropriate location for the installation of artificial sound absorption for the purpose of improving the broadband insertion loss, while the side walls are found to be the second best. Results also indicate that the acoustic modes of the balcony opening and the balcony cavity resonance in a direction normal to the window could have a great impact on the one-third octave band insertion losses. The maximum broadband road traffic noise insertion loss achieved is about 7 dB.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.3598430