Minimally Simple Binaural Room Modeling Using a Single Feedback Delay Network

Agus, Natalie; Anderson, H.S.; Chen, Jer‐Ming; Lui, Simon; Herremans, Dorien

doi:10.17743/jaes.2018.0045

Cited by 4 publications

(2 citation statements)

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“…Since individual HRTF measurements are time-consuming and require specialized facilities, a possible solution is the estimation of the individual HRTF from the listener's anthropometry. HRTF individualization should be based on a minimum set of parameters to balance optimization and efficiency in terms of accuracy of synthesis and computational complexity, as recently investigated in the literature [1,29].…”

Section: Hrtf Individualizationmentioning

confidence: 99%

Co-Immersion in Audio Augmented Virtuality: The Case Study of a Static and Approximated Late Reverberation Algorithm

Fantini,

Presti,

Geronazzo

et al. 2023

IEEE Trans. Visual. Comput. Graphics

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Section: Hrtf Individualizationmentioning

confidence: 99%

Co-Immersion in Audio Augmented Virtuality: The Case Study of a Static and Approximated Late Reverberation Algorithm

Fantini,

Presti,

Geronazzo

et al. 2023

IEEE Trans. Visual. Comput. Graphics

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“…There, the output is mixed with an orthogonal matrix to maintain the level of decorrelation. Alternatively, the output channels are mixed to achieve the desired correlation, such as in binaural reproduction [26,27].…”

Section: X(z) Bmentioning

confidence: 99%

Decorrelation in Feedback Delay Networks

Schlecht,

Fagerström,

Välimäki

2023

IEEE/ACM Trans. Audio Speech Lang. Process.

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The feedback delay network (FDN) is a popular filter structure to generate artificial spatial reverberation. A common requirement for multichannel late reverberation is that the output signals are well decorrelated, as too high a correlation can lead to poor reproduction of source image and uncontrolled coloration. This paper presents the analysis of multichannel correlation induced by FDNs. It is shown that the correlation depends primarily on the feedforward paths, while the long reverberation tail produced by the recursive path does not contribute to the inter-channel correlation. The impact of the feedback matrix type, size, and delays on the inter-channel correlation is demonstrated. The results show that small FDNs with a few feedback channels tend to have a high inter-channel correlation, and that the use of a filter feedback matrix significantly improves the decorrelation, often leading to the lowest inter-channel correlation among the tested cases. The learnings of this work support the practical design of multichannel artificial reverberators for immersive audio applications.

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