Precomputing Geometry-Based Reverberation Effects for Games

Tsingos N. Precomputing Geometry-Based Reverberation Effects for Games. In: AES Conference: 35th International Conference: Audio for Games. Audio Engineering Society; 2009. Paper 10. Available from: https://aes.org/publications/elibrary-page/?id=15164

@inproceedings{Tsingos2009_15164,
  author = {Tsingos, Nicolas},
  title = {{Precomputing Geometry-Based Reverberation Effects for Games}},
  booktitle = {AES Conference: 35th International Conference: Audio for Games},
  note = {Paper 10},
  year = {2009},
  month = feb,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=15164}
}

TY  - CPAPER
TI  - Precomputing Geometry-Based Reverberation Effects for Games
AU  - Tsingos, Nicolas
T2  - AES Conference: 35th International Conference: Audio for Games
M1  - Paper 10
PY  - 2009
DA  - 2009/02/06
UR  - https://aes.org/publications/elibrary-page/?id=15164
PB  - Audio Engineering Society
LA  - en
AB  - Current video games either pre-render reverberation effects into the sound effects or implement them at run-time using artificial reverberation filters. While interactive geometrical approaches can be used for more accurate acoustical modeling, the increased authoring complexity and the additional cost of geometrical calculations still appears to overshadow their potential benefits. This paper presents solutions to integrate off-line geometrical acoustic modeling in game environments. By pre-computing image-source gradients for early reflections and directional decay profiles, we can generate location dependent reverberation effects without storing or accessing the actual geometry at run-time. We render such reverberation effects using a frequency-domain scalable processing approach. In this context, we introduce an efficient prioritization scheme and evaluate alternative transforms for late reverberation processing. Our pipeline enables fine-grain rendering of distance and surface proximity effects and modeling of both outdoor and coupled indoor spaces with arbitrary reverberation decay profiles.
ER  -