The influence of different scattering algorithms on room acoustic simulations in rectangular rooms
(2021) In Buildings 11(9).- Abstract
Raytracing is a widespread tool for room acoustic simulations, and one of its main advan-tages is the inclusion of surface scattering. Although surface scattering has been acknowledged as a central aspect of accurate raytracing simulations for many years, there is ongoing research into its effects and how to implement it better. This study evaluates three different algorithms for surface scattering in raytracers, referred to as on–off scattering, perturbation scattering, and diffuse field scattering. Their theoretical foundation is discussed, and the physical accuracy of the resulting simulations is evaluated by comparing simulated room acoustic parameters to measurements. It is found that the choice of surface scattering algorithm has... (More)
Raytracing is a widespread tool for room acoustic simulations, and one of its main advan-tages is the inclusion of surface scattering. Although surface scattering has been acknowledged as a central aspect of accurate raytracing simulations for many years, there is ongoing research into its effects and how to implement it better. This study evaluates three different algorithms for surface scattering in raytracers, referred to as on–off scattering, perturbation scattering, and diffuse field scattering. Their theoretical foundation is discussed, and the physical accuracy of the resulting simulations is evaluated by comparing simulated room acoustic parameters to measurements. It is found that the choice of surface scattering algorithm has a significant impact on the simulation outcomes, both in terms of physical accuracy and in terms of usability. Additionally, there are differences in the parametrization of surface scattering depending on the algorithm chosen. Of the three tested algorithms, the most commonly used algorithm (on–off scattering) seems to have the best properties for simulations.
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- author
- Autio, Hanna LU ; Vardaxis, Nikolaos Georgios LU and Hagberg, Delphine Bard LU
- organization
- publishing date
- 2021-09-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Acoustic raytracing, Room acoustic simulation, Surface scattering
- in
- Buildings
- volume
- 11
- issue
- 9
- article number
- 414
- publisher
- MDPI AG
- external identifiers
-
- scopus:85115779976
- ISSN
- 2075-5309
- DOI
- 10.3390/buildings11090414
- language
- English
- LU publication?
- yes
- id
- b9d6946b-634f-40c8-af18-e521ffe2db8c
- date added to LUP
- 2021-10-08 14:00:30
- date last changed
- 2024-02-04 04:38:11
@article{b9d6946b-634f-40c8-af18-e521ffe2db8c, abstract = {{<p>Raytracing is a widespread tool for room acoustic simulations, and one of its main advan-tages is the inclusion of surface scattering. Although surface scattering has been acknowledged as a central aspect of accurate raytracing simulations for many years, there is ongoing research into its effects and how to implement it better. This study evaluates three different algorithms for surface scattering in raytracers, referred to as on–off scattering, perturbation scattering, and diffuse field scattering. Their theoretical foundation is discussed, and the physical accuracy of the resulting simulations is evaluated by comparing simulated room acoustic parameters to measurements. It is found that the choice of surface scattering algorithm has a significant impact on the simulation outcomes, both in terms of physical accuracy and in terms of usability. Additionally, there are differences in the parametrization of surface scattering depending on the algorithm chosen. Of the three tested algorithms, the most commonly used algorithm (on–off scattering) seems to have the best properties for simulations.</p>}}, author = {{Autio, Hanna and Vardaxis, Nikolaos Georgios and Hagberg, Delphine Bard}}, issn = {{2075-5309}}, keywords = {{Acoustic raytracing; Room acoustic simulation; Surface scattering}}, language = {{eng}}, month = {{09}}, number = {{9}}, publisher = {{MDPI AG}}, series = {{Buildings}}, title = {{The influence of different scattering algorithms on room acoustic simulations in rectangular rooms}}, url = {{http://dx.doi.org/10.3390/buildings11090414}}, doi = {{10.3390/buildings11090414}}, volume = {{11}}, year = {{2021}}, }