Name
Abstract | ||
|---|---|---|
Real-time sound rendering engines often render occlusion and early sound reflection effects using geometrical techniques such as ray or beam tracing. They can only achieve interactive rendering for environments of low lo- cal complexity resulting in crude effects which can degrade the sense of immersion. However, surface detail or complex dynamic geometry has a strong influence on sound propagation and the resulting auditory perception. This paper focuses on high-quality modeling of first-order sound scattering. Based on a surface-integral formu- lation and the Kirchhoff approximation, we propose an efficient evaluation of scattering effects, including both diffraction and reflection, that leverages programmable graphics hardware for dense sampling of complex sur- faces. We evaluate possible surface simplification techniques and show that combined normal and displacement maps can be successfully used for audio scattering calculations. We present an auralization framework that can render scattering effects interactively thus providing a more compelling experience. We demonstrate that, while only considering first order phenomena, our approach can provide realistic results for a number of practical in- teractive applications. It can also process highly detailed models containing millions of unorganized triangles in minutes, generating high-quality scattering filters. Resulting simulations compare well with on-site recordings showing that the Kirchhoff approximation can be used for complex scattering problems. |
Year | DOI | Venue |
|---|---|---|
2007 | 10.2312/EGWR/EGSR07/111-120 | eurographics symposium on rendering techniques |
Keywords | Field | DocType |
first-order sound scattering,audio scattering calculation,real-time sound rendering engine,complex scattering problem,complex dynamic geometry,high-quality scattering filter,kirchhoff approximation,scattering effect,sound propagation,instant sound scattering,early sound reflection effect,first order,complex dynamics,real time | Computer vision,Graphics hardware,Computer graphics (images),Computer science,Beam tracing,Artificial intelligence,Immersion (virtual reality),Displacement mapping,Sampling (statistics),Scattering,Rendering (computer graphics),Diffraction | Conference |
Citations | PageRank | References |
11 | 0.96 | 12 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Nicolas Tsingos | 1 | 371 | 28.66 |
| Carsten Dachsbacher | 2 | 1396 | 93.20 |
| Sylvain Lefebvre | 3 | 1074 | 62.54 |
| Matteo Dellepiane | 4 | 379 | 30.85 |