Beam Tracing with Refraction

Sikora, Marjan; Mateljan, Ivo; Bogunović, Nikola

doi:10.2478/v10168-012-0039-y

Cited by 7 publications

(3 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the work of Siltanen et al [ 34], they presented a way to introduce incoherent reflections in a beam tracer algorithm. Sikora et.al [35] developed a beam tracing with the refraction method to examine the possibility of creating the beam tracing simulation of sound propagation in environments with piecewise non-homogenous media.…”

Section: Geometrical Acoustical Methodsmentioning

confidence: 99%

Recent advances in building acoustics: An overview of prediction methods and their applications

Mak

Wang

2015

Building and Environment

View full text Add to dashboard Cite

Section: Geometrical Acoustical Methodsmentioning

confidence: 99%

Recent advances in building acoustics: An overview of prediction methods and their applications

Mak

Wang

2015

Building and Environment

View full text Add to dashboard Cite

“…As a result it does not suffer from sampling problems [24]. Recent developments in this area include the development of priority based beam tracing [25], bidirectional beam tracing, amortized beam tracing [26], beam tracing using precomputed visibility diagrams [27], beam tracing using binary space partitioning [22], multi-threaded beam tracing [28], as a part of hybrid models [29] and with the inclusion of refraction effect [30].…”

Section: A Deterministic Tracingmentioning

confidence: 99%

Sound propagation in 3D spaces using computer graphics techniques

Charalampous

Michael

2014

2014 International Conference on Virtual Systems &Amp; Multimedia (VSMM)

View full text Add to dashboard Cite

Sound propagation in 3D spaces is governed by similar physical principles as light. As a result, sound rendering in a 3D virtual environment can benefit from methods developed for graphics rendering and vice versa. In this review, we provide an overview of methods used for sound rendering that share concepts and techniques with graphics rendering. Firstly we describe geometrical propagation techniques where the computations are based on ray theory similar to ray tracing techniques in computer graphics. Secondly, we review numerical techniques. These techniques, similar to the idea of radiosity, are based on the subdivision of the space into elements. Then we describe acceleration techniques that can be used in combination with other methods to speed up calculations. Lastly, for the sake of completeness, a quick overview is given of sound computation techniques that simulate specific sound effects that do not apply on illumination. The aim of this survey is to share knowledge among the two disciplines using familiar and known concepts.

show abstract

“…Hayat [3] developed a method for sound scattering near a penetrable plane which can be considered as a mathematical approach for the sea surface modeling. Sikora et al [4], by focusing on ultrasounds, recently developed a beam tracing with refraction (BTR) method which simulates the reflection and refraction of sound in a medium. Although the goal of the majority of these studies has been the investigation of sound in the propagation medium, sound attenuation in the spectral region from 20 to 200 Hz remains largely an unexplored area in underwater acoustics [5].…”

Section: Introductionmentioning

confidence: 99%

Sound attenuation in air–water media with rough bubbly interface at low frequencies considering bubble resonance dispersion

Bolghasi

Ghadimi

Chekab

2017

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

The importance of incorporating the surface bubbles in acoustic modeling lies in the significant effects of the bubbly layer of the sea surface on the sound scattering, attenuation, and reflection. In the present paper, an acoustical system consisting of water, air, and bubbly water is considered and a particular approach incorporating a new version of the power-law concept for volumetric and scattering attenuation of bubbles is presented for the prediction of low-frequency damping of the sound in nearsurface propagation. Sound attenuation in this system is traced in four steps and each step is considered as an individual case. Through applying the new power-law attenuation, the corresponding damping coefficient is derived. It has been shown by comparing the obtained results with experimental data that, at lower frequencies, the present model has better agreement with experiments than the theoretical model. Furthermore, a parametric study is conducted on different volume fractions and surface roughness, from which the equivalent damping coefficient of the free surface region is extracted using a mechanical and acoustical analogy to model the sound attenuation due to impedance difference, rough interface, bubbly water, and propagation range. It has been demonstrated that the present model can be used as an effective simple method for predicting the attenuation of sound in bubbly media with different bubble sizes.

show abstract

Beam Tracing with Refraction

Cited by 7 publications

References 23 publications

Recent advances in building acoustics: An overview of prediction methods and their applications

Recent advances in building acoustics: An overview of prediction methods and their applications

Sound propagation in 3D spaces using computer graphics techniques

Sound attenuation in air–water media with rough bubbly interface at low frequencies considering bubble resonance dispersion

Contact Info

Product

Resources

About