Scattering delay network an interactive reverberator for computer games

Enzo, De Sena
Hacıhabiboğlu, Hüseyin
Cvetkovic, Zoran
Many 3D computer games incorporate audio renderers simulating room acoustics to provide the user with a high level of immersiveness and realism. Full-scale interactive room auralisation systems are impractical for use in computer games due to their high computational cost. As a low-cost alternative, artificial reverberators can be used. This paper is concerned with the design of a scalable interactive reverberator inspired by digital waveguide mesh (DWM) models and feedback delay networks (FDN). This reverberator is by construction tightly linked to the acoustics of the enclosure that it simulates. Simulation of unequal and frequency-dependent wall absorption, as well as directional sources and microphones can also be incorporated. It is shown that the response of the proposed reverberator accurately renders the early reflections and room modes, as well as providing RT60 values consistent with Sabine and Eyring equations.
41st International Conference: Audio for Games (February 2011)


Frequency Domain Scattering Delay Networks for Simulating Room Acoustics in Virtual Environments
De Sena, Enzo; Hacıhabiboğlu, Hüseyin; Cvetkovic, Zoran (2011-11-28)
Modelling, simulation and auralisation of room acoustics plays an important role in computer games and virtual reality applications by increasing the level of realism. Accurate simulation of room acoustics is a computationally costly process which is often substituted with artificial reverberators that provide a computationally simpler alternative. However, such systems lack the accuracy and are not in general able to accurately simulate important aspects of room acoustics such as early reflections, source/...
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Atalay, Timuçin Berk; Hacıhabiboğlu, Hüseyin; Department of Modeling and Simulation (2019)
Artificial reverberators provide a computationally viable alternative to full-scale room acoustics simulation methods when used in interactive, immersive systems. Scattering delay network (SDN) is a relatively recent artificial reverberator that allows direct parametric control over the geometry of a simulated rectangular enclosure as well the directional characteristics of the simulated sound sources and microphones. Coupled volume SDN aims to extend the SDN structure for enclosures coupled via an aperture...
Extended scattering delay networks incorporating arbitrarily shaped rooms and edge diffraction
Pekçetin, Serkan; Hacıhabiboğlu, Hüseyin; Department of Modeling and Simulation (2016)
In order to achieve immersion in computer games, room acoustics models are often employed. Due to highly computational cost involved in full-scale room simulation, artificial reverberators are commonly used. Scattering Delay Network is such a reverberator that can run at interactive rates. The reverberator relies on geometrical acoustics to render first-order reflections correctly while it offers a convincing approximation in higher order reflections. The original model was exclusively proposed for shoebox ...
Metan, Ali Can; Hacıhabiboğlu, Hüseyin (2016-09-09)
Existing game engines and virtual reality software, use various techniques to render spatial audio. One such technique, binaural synthesis, is achieved through the use of head-related transfer functions, in conjunction with artificial reverberators. For virtual environments that embody a large number of concurrent sound sources, binaural synthesis will be computationally costly. The work presented in this paper aims to develop a methodology that improves overall performance by culling inaudible and perceptu...
Simulation of coupled volume acoustics with coupled volume scattering delay network models
Atalay, Timuçin; Gül, Zühre Sü; De Sena, Enzo; Cvetkovic , Zoran; Hacıhabiboğlu, Hüseyin (2021-06-01)
Simulation of the acoustics of coupled rooms is an important problem not only in architectural acoustics but also in immersive audio applications that require acoustic simulation at interactive rates. Requirements for such applications are less demanding for accuracy but more demanding for computational cost. Scattering delay network (SDN) is a real-time, interactive room acoustics simulator for cuboid rooms. SDN affords an exact simulation of first-order early reflections, a gracefully degrading simulation...
Citation Formats
D. S. Enzo, H. Hacıhabiboğlu, and Z. Cvetkovic, “Scattering delay network an interactive reverberator for computer games,” presented at the 41st International Conference: Audio for Games (February 2011), London, UK, 2011, Accessed: 00, 2021. [Online]. Available: