A survey of ray tracing acceleration techniques
An introduction to ray tracing
A beam tracing approach to acoustic modeling for interactive virtual environments
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
Real-time acoustic modeling for distributed virtual environments
Proceedings of the 26th annual conference on Computer graphics and interactive techniques
Exploiting frame coherence with the temporal depth buffer in a distributed computing environment
PVGS '99 Proceedings of the 1999 IEEE symposium on Parallel visualization and graphics
A Characterization of Ten Hidden-Surface Algorithms
ACM Computing Surveys (CSUR)
Parallel global illumination algorithms
Practical parallel rendering
Exploiting temporal coherence in ray casted walkthroughs
SCCG '03 Proceedings of the 19th spring conference on Computer graphics
An Adaptive Multiresolution Method for Progressive Model Transmission
Presence: Teleoperators and Virtual Environments
A Scalable System for 3D Audio Ray Tracing
ICMCS '99 Proceedings of the 1999 IEEE International Conference on Multimedia Computing and Systems - Volume 02
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Dynamic sound rendering is attracting a lot of attention in recent years due to its applications in computer games and architecture simulation. Although physical based methods can produce realistic outputs, they typically involve recursive tracing of sound rays, which may be computationally too expensive for interactive dynamic environments. In this paper, we propose a ray caching method that exploits ray coherence to accelerate the ray-tracing process. The proposed method is tailored for interactive sound rendering based on two approximation techniques: spatial and angular approximation. The ray cache supports intra-frame, inter-frame and inter-observer sharing of rays. We show the performance of the new method through a number of experiments.