Identification of Nonlinear Circuits as Port-Hamiltonian Systems

This paper addresses identification of nonlinear circuits for power-balanced virtual analog modeling and simulation. The proposed method combines a port-Hamiltonian system formulation with kernel-based methods to retrieve model laws from measurements. This combination allows for the estimated model...

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Bibliographic Details
Published in2021 24th International Conference on Digital Audio Effects (DAFx) pp. 1 - 8
Main Authors Najnudel, Judy, Muller, Remy, Helie, Thomas, Roze, David
Format Conference Proceeding
LanguageEnglish
Published the authors 08.09.2021
Subjects
Circuit topology
Encoding
Estimation
Integrated circuit interconnections
Mean square error methods
Measurement uncertainty
Nonlinear circuits
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Summary:This paper addresses identification of nonlinear circuits for power-balanced virtual analog modeling and simulation. The proposed method combines a port-Hamiltonian system formulation with kernel-based methods to retrieve model laws from measurements. This combination allows for the estimated model to retain physical properties that are crucial for the accuracy of simulations, while representing a variety of nonlinear behaviors. As an illustration, the method is used to identify a nonlinear passive peaking EQ.
ISSN:2413-6689
DOI:10.23919/DAFx51585.2021.9768224