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Application of the wave based prediction technique to building acoustical problems
Book Contribution - Book Chapter Conference Contribution
The Wave Based Method (WBM) is used to predict the airborne and structure-borne sound insulation of building structures. In building acoustics, the frequency range of interest is 50-5000 Hz. Prediction models in building acoustics often assume infinite structures (like the transfer matrix method) or diffuse sound fields (statistical energy methods). These models cannot explain the inter-laboratory differences typically encountered in the lower frequency range. A wave based prediction model has therefore been developed to describe the direct sound transmission through a structure placed between two reverberant rooms. The rectangular geometry, often encountered in buildings, allows to introduce numerical simplifications which make computations up to 3150 Hz possible on a standard desktop pc. The WBM results are validated with airborne and structure-borne sound insulation measurements of single and double wall structures and a sandwich element.
Book: Proceedings of the 2010 International Conference on Noise and Vibration Engineering
Pages: 2285 - 2299
Number of pages: 15
Authors from:Higher Education