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Convention Paper

Practical Considerations of Time-Varying Feedback Delay Networks

Authors: Schlecht, Sebastian J.; Habets, Emanuël A. P.

AES Convention 138 · Paper 9255 · May 2015

Abstract

Feedback delay networks (FDNs) can be efficiently used to generate parametric artificial reverberation. Recently, the authors proposed a novel approach to time-varying FDNs by introducing a time-varying feedback matrix. The formulation of the time-varying feedback matrix was given in the complex eigenvalue domain, whereas this contribution specifies the requirements for real valued time-domain processing. In addition, the computational costs of different time-varying feedback matrices, which depend on the matrix type and modulation function, are discussed. In a performance evaluation, the proposed orthogonal matrix modulation is compared to a direct interpolation of the matrix entries.

Details

Published in
AES Convention 138
AES Convention
138
Paper number
9255
Publication date
May 6, 2015
Session subject
Audio Signal Processing
Affiliation
International Audio Laboratories Erlangen, Erlangen, Germany (See document for exact affiliation information.)
Type
Convention Paper