Loudspeaker virtualization–Part I: Digital modeling and implementation of the nonlinear transducer equivalent circuit

This manuscript, the first of a two-part series, presents methodology for efficiently implementing an equivalent circuit nonlinear loudspeakers in discrete-time domain. is crucial step that will allow us to design new algorithms loudspeaker virtualization part II this series. The presented implementation, fact, based on Wave Digital Filter (WDF) principles, which lead fully explicit model, sense no iterative solvers are needed compute output signal. proposed WDF highly efficient and modular, since reference modeled as computable interconnection input-output processing blocks. accuracy implementation confirmed by comparing it ground-truth SPICE simulation measurements real loudspeakers. confirms modeling approach can be reliably used rapid transduction behavior (within frequency limits validity circuit), employed develop digital preprocessing method described second manuscript