Reflections of sound from concave surfaces
- Autores: Martijn Vercammen
- Localización: Proceedings of the ISRA 2007 Seville, Vol. 3, 2008 (Oral Session Communications), ISBN 9788469082676
- Idioma: español
- Enlaces
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Resumen
Many small or large rooms have concave surfaces. With improved building technology and fashions in architecture (blobs) problems due to these surfaces are encountered more and more. Some situations are described in literature [1,2,3]. In our consultancy work we had to deal with these situations e.g. in concert halls [4,5]. When sound is reflected from a concave surfaces the geometry of the surface will force the energy to concentrate. The sound pressure due to this focussing if mostly calculated by computer simulation techniques applied on a segmented shape or by a geometrical approximation. Both methods however fail in the focussing point, the result is not even close to the real value. To correctly estimate the sound pressure a wave extrapolation method is used, that will be presented here.
