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A Novel Algorithm for Directional Scattering in Acoustic Ray Tracers

Autio, Hanna LU orcid and Nilsson, Erling LU (2023) In Acoustics 5(4). p.928-947
Abstract
It is vital to consider acoustic scattering when using geometrical acoustic simulation techniques, such as ray tracing. However, there are few methods for modelling scattering, and most rely on strong assumptions of uniformity on the distribution of scattered energy. In this paper, a model for directional scattering in ray tracers is presented. The model is based on an idealized model of a 1D scatterer, which is then used to extend the most commonly used scattering algorithm in ray tracers today. The developed algorithm is implemented in a ray tracer and tested to evaluate its performance compared to existing methods. It is found that the directional scattering algorithm can be used to replicate measured effects on room acoustic parameters... (More)
It is vital to consider acoustic scattering when using geometrical acoustic simulation techniques, such as ray tracing. However, there are few methods for modelling scattering, and most rely on strong assumptions of uniformity on the distribution of scattered energy. In this paper, a model for directional scattering in ray tracers is presented. The model is based on an idealized model of a 1D scatterer, which is then used to extend the most commonly used scattering algorithm in ray tracers today. The developed algorithm is implemented in a ray tracer and tested to evaluate its performance compared to existing methods. It is found that the directional scattering algorithm can be used to replicate measured effects on room acoustic parameters caused by changes in the orientation of 1D scatterers. (Less)
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author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Acoustics
volume
5
issue
4
pages
928 - 947
publisher
MDPI AG
external identifiers
  • scopus:85180648094
ISSN
2624-599X
DOI
10.3390/acoustics5040054
language
English
LU publication?
yes
id
f1814461-03ea-4787-b3a1-c9909a93337c
date added to LUP
2024-02-08 11:43:17
date last changed
2024-02-09 04:05:50
@article{f1814461-03ea-4787-b3a1-c9909a93337c,
  abstract     = {{It is vital to consider acoustic scattering when using geometrical acoustic simulation techniques, such as ray tracing. However, there are few methods for modelling scattering, and most rely on strong assumptions of uniformity on the distribution of scattered energy. In this paper, a model for directional scattering in ray tracers is presented. The model is based on an idealized model of a 1D scatterer, which is then used to extend the most commonly used scattering algorithm in ray tracers today. The developed algorithm is implemented in a ray tracer and tested to evaluate its performance compared to existing methods. It is found that the directional scattering algorithm can be used to replicate measured effects on room acoustic parameters caused by changes in the orientation of 1D scatterers.}},
  author       = {{Autio, Hanna and Nilsson, Erling}},
  issn         = {{2624-599X}},
  language     = {{eng}},
  month        = {{10}},
  number       = {{4}},
  pages        = {{928--947}},
  publisher    = {{MDPI AG}},
  series       = {{Acoustics}},
  title        = {{A Novel Algorithm for Directional Scattering in Acoustic Ray Tracers}},
  url          = {{http://dx.doi.org/10.3390/acoustics5040054}},
  doi          = {{10.3390/acoustics5040054}},
  volume       = {{5}},
  year         = {{2023}},
}