Acoustic treatments for building curved surfaces: practical applications

Ghislain Beillard , Cédric Ramauge

Curved walls are not rare in building architectures. Acoustic reflections by these surfaces may create sound focusing issues damaging the room acoustic qualities [Martijn L.S. Vercammen, Reflection of sound by concave surfaces, Proceedings of 20th International Congress on Acoustics, August 2010, Sydney, Australia]. With the increasing number of building acoustic norms, acoustic treatments have to be found out and settled in order to guaranty the best acoustic comfort in specific architecture rooms. The aim of this paper is to present practical applications of building focusing problems. Indeed first measurements have been carried out to characterize the phenomenon. Results are then compared with 3D model simulations by image source method. Different acoustic treatments configurations have been also simulated afterwards in order to choose the most appropriate technical solutions respecting architectural constraints and acoustic requirements. Finally, these configurations are settled and checked in last in situ measurements.

Mots clés: sound reflection; curved surfaces; architectural acoustics; focusing

Domaines: Acoustique [physics.class-ph]

Ghislain Beillard, Cédric Ramauge. Acoustic treatments for building curved surfaces: practical applications. Acoustics 2012, Apr 2012, Nantes, France. ⟨hal-00811305⟩