Modelling classroom conditions with different boundary conditions

Gerd Høy Marbjerg, Cheol-Ho Jeong, Jonas Brunskog, Alejandro Gonzalez Pacheco, Erling Nilsson

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


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 languageEnglish
Title of host publicationProceedings of Forum Acusticum
Number of pages8
Publication date2014
Publication statusPublished - 2014
Event7th Forum Acusticum - Krakow, Poland
Duration: 7 Sep 201412 Sep 2014


Conference7th Forum Acusticum

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