From this page you can download some geometric models of rooms.

• The models applied in [1] (Fig. 6, models b, c, and d) in DXF format.

[1] Laine, S., Siltanen, S., Lokki, T., and Savioja, L., "Accelerated beam tracing algorithm," Applied Acoustics, vol. 70, nr. 1, pp. 172-181, January 2009. Online (ScienceDirect)

• An acoustic model of the Sigyn hall in Turku, Finland. The model contains ca. 300 polygons and is made by Dr Tapio Lahti from Akukon, Finland.