Abstract
A model that combines image source modelling and acoustical radiosity with complex boundary
condition, thus including phase shifts on reflection has been developed. The model is called PARISM
(Phased Acoustical Radiosity and Image Source Model). It has been developed in order to be able
to model both specular and diffuse reflections with complex-valued acoustical descriptions of the
surfaces. In this paper the PARISM model is used to simulate a rectangular room with most of the
absorption located in the ceiling. This room configuration is typical for classroom conditions. The
simulations are done using different boundary conditions in order to investigate the influence of phase
shifts in reflections, the angle dependence of the reflection coefficient and the scattering coefficient.
The focus of the simulations is to investigate the influence of the boundary condition on room acoustic
measures which are important for evaluation of the acoustics in classrooms.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of Forum Acusticum |
| Number of pages | 8 |
| Publication date | 2014 |
| Publication status | Published - 2014 |
| Event | 7th Forum Acusticum - Krakow, Poland Duration: 7 Sept 2014 → 12 Sept 2014 |
Conference
| Conference | 7th Forum Acusticum |
|---|---|
| Country/Territory | Poland |
| City | Krakow |
| Period | 07/09/2014 → 12/09/2014 |