Conveners
A12.08/A16.12 Numerical Methods for Room Acoustics: P507
- Maarten Hornikx (Eindhoven University of Technology)
- Albert Prinn (International Audio Laboratories Erlangen)
A12.08/A16.12 Numerical Methods for Room Acoustics: S085
- Maarten Hornikx (Eindhoven University of Technology)
- Albert Prinn (International Audio Laboratories Erlangen)
A12.08/A16.12 Numerical Methods for Room Acoustics: S504
- Maarten Hornikx (Eindhoven University of Technology)
- Albert Prinn (International Audio Laboratories Erlangen)
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Matteo Scerbo (DTU Electro)10/09/2026, 09:00A12 Numerical, Computational, and Theoretical Acoustics
In the context of acoustic radiance transfer, one piece of advice is frequently seen in the literature: the reflecting surface should be segmented in patches of approximately equal area (uniformity). Another often-repeated suggestion is that individual surface patches should be compact, i.e., one should avoid using patches which are long but narrow (compactness). Very few works in the...
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Jan Wouter Smits (University of Edinburgh)10/09/2026, 09:00A12 Numerical, Computational, and Theoretical Acoustics
Room acoustic simulations often require geometry simplification to manage computational complexity, potentially introducing modeling bias. In this study, we demonstrate that a finite-difference (FD) framework can accurately simulate a measured benchmark room with complex diffusing structures while avoiding explicit geometry simplification.A geometry-based surface scattering approach is...
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Jan Wouter Smits (University of Edinburgh)10/09/2026, 09:20A12 Numerical, Computational, and Theoretical Acoustics
A finite-difference room acoustic simulation method is proposed that can model both locally-reacting boundaries and extended-reaction effects via propagation in porous materials. Its suitability for wideband simulations in automotive cabin scenarios is explored by comparing simulations of a small reverberation room with experimental measurements, including configurations with varying absorber...
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Jonathan A. Hargreaves (Acoustics Innovation Institute)10/09/2026, 09:40A12 Numerical, Computational, and Theoretical Acoustics
Raytracing is an established method for computing the late-time part of room impulse responses, but it has the drawback that only very crude Monte Carlo models of boundary scattering and diffraction are possible to include without it losing its attractive computational cost scaling. This happens because higher-resolution models of these processes output multiple child rays for every parent ray...
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Ilaria Fichera (Eindhoven University of Technology)10/09/2026, 10:20A12 Numerical, Computational, and Theoretical Acoustics
The diffusion equation model has been used for room acoustics simulations because of its computational efficiency. Traditionally, the diffusion coefficient of the diffusion equation has been treated as a constant depending on the room's volume and total surface area. However, numerical investigations have demonstrated that in elongated spaces, this assumption does not hold: the diffusion...
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Andrea Andrijasevic (University of Applied Sciences Rijeka)10/09/2026, 10:40A12 Numerical, Computational, and Theoretical Acoustics
Sweeping echoes are an acoustical phenomenon present in impulse responses of shoebox-shaped rooms generated with either geometrical or wave-based room acoustics modelling software. They are also present in audio recordings convolved with the responses, introducing a distinctive change in pitch that contradicts the usual room reverberance characteristics. Based on an analytical expression...
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Paul Simon (Audio Communication Group, Technische Universität Berlin)10/09/2026, 11:00A12 Numerical, Computational, and Theoretical Acoustics
The optimisation of room dimensions for listening environments has been the subject of several studies in the field of room acoustics. Existing approaches, however, have assumed rigid boundaries and therefore dismissed the impact of non-rigid partitions, such as drywall, on modal behaviour. To investigate the implications of this effect, simulations were performed using the finite element...
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Ning Xiang (Rensselaer Polytechnic Institute)10/09/2026, 11:20A12 Numerical, Computational, and Theoretical Acoustics
Accurate prediction of sound energy decay in enclosed spaces is essential for acoustic design in performance halls, classrooms, and recording studios. Statistical room-acoustic theory, such as the Sabine reverberation formula, provides fast but spatially limited estimates, while wave-theoretical simulations are physically accurate but computationally expensive. This work presents a...
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