Designing Directional Reverberators for Spatial Sound Reproduction - Institut de Recherche et Coordination Acoustique/Musique
Communication Dans Un Congrès Année : 2024

Designing Directional Reverberators for Spatial Sound Reproduction

Conception de réverbérateurs directionnels pour la reproduction sonore spatiale

Résumé

The auralization of acoustics aims to reproduce the most salient attributes perceived during sound propagation. While different approaches produce various levels of detail, efficient methods such as low-order geometrical acoustics and artificial reverberation are often favored to minimize the computational cost of real-time immersive applications. Unlike most acoustics modeling approaches, artificial reverberators are perceptually motivated synthesis methods aiming to reproduce statistical properties occurring in a late reverberant sound field. A special class of reverberators, called directional feedback delay networks (DFDNs), produce direction-dependent reverberation perceived in anisotropic and inhomogeneous sound fields. However, due to a large parameter space, these reverberators can be complex to define, and reproducing very precise time-frequency-directional reverberation may become resource-intensive unless special care is taken in their design. This article introduces several design strategies for DFDNs used for reverberant sound field reproduction. This includes using a geometrical acoustics formulation of late reverberation to parameterize DFDNs, a perceptually-motivated reduction algorithm to limit the complexity of reproduction, a generic output grid design agnostic of the loudspeaker layouts or reproduction format, and special considerations for six-degree-of-freedom sound reproduction.
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Dates et versions

hal-04668182 , version 1 (06-08-2024)

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  • HAL Id : hal-04668182 , version 1

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Benoit Alary, Archontis Politis, Stefan Bilbao. Designing Directional Reverberators for Spatial Sound Reproduction. AES 5th International Conference on Audio for Virtual and Augmented Reality, AES, Aug 2024, Redmond, WA, United States. ⟨hal-04668182⟩
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