Efficient simulation of acoustic physical models with nonlinear dissipation

Riccardo Russo, Michele Ducceschi, Stefan Bilbao, Matthew Hamilton

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

One long-term goal of physics-based sound synthesis and audio effect modeling has been to open the door to models without a counterpart in the real world. Less explored has been the fine-grained adjustment of the constituent physical laws that underpin such models. In this paper, the introduction of a nonlinear damping law into a plate reverberation model is explored, through the use of four different functions, transferred from the setting of virtual-analog electronics. First, a case study of an oscillator with nonlinear damping is investigated. Results are compared against linear dissipation, illustrating differing spectral characteristics. To solve the systems, a recently proposed numerical solver is employed, that entirely avoids the use of iterative routines such as Newton-Raphson for solving nonlinearities, thus allowing very efficient numerical solution. This scheme is then used to simulate a plate reverbation unit, and tests are run, to investigate spectral variations induced by nonlinear damping. Finally, a musical case is presented that includes frequency-dependent damping coefficients.
Original languageEnglish
Title of host publicationProceedings of the 20th Sound and Music Computing Conference
EditorsRoberto Bresin, Kjetil Falkenberg
Place of PublicationStockholm, Sweden
PublisherSound and Music Computing Network
Number of pages7
ISBN (Electronic)9789152773727
Publication statusPublished - 14 Jun 2023
EventSound and Music Computing Conference - KTH Royal Institute of Technology and KMH Royal College of Music, Stockholm, Sweden
Duration: 12 Jun 202317 Jun 2023

Publication series

NameProceedings of the Sound and Music Computing Conference
PublisherSound and Music Computing Network
ISSN (Electronic)2518-3672


ConferenceSound and Music Computing Conference
Internet address


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