Reduction of Low Frequency Noise Transmitted Through a Single-Pane Window
Windows typically comprise the weakest link in sound insulation amongst all the components in a building façade, thus making them good paths for low-frequency noise transmission. Here, the effect on sound transmission of adding non-periodic stiffening elements to windows is explored. The contribution of elastic mounting to low-frequency noise transmission is also considered. A finite element model allowing for both resilient panel mounting and the addition of variable stiffness beams within the panel was constructed. The model allows for variable positioning of beam elements as part of a stiffened panel configuration. Experimental sound transmission loss testing of panels with variable edge stiff ness was performed to verify the character of the predictions seen in the models. The results show that the low-frequency sound transmission loss below 150 Hz can be increased by several dB through careful use of stiffening elements, while resilient mounting generally decreases the low-frequency sound transmission loss of windows.
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Document Type: Research Article
Publication date: 01 May 2011
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- Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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