Wave Digital Modeling and Implementation of Nonlinear Audio Circuits With Nullors

The nullor is a theoretical two-port element suitable to model several multi-port devices common in audio circuitry, such as ideal operational amplifiers, transconductance and transistors operating linear regime. In this manuscript, we present an approach for the Wave Digital (WD) modeling implementation of circuits with multiple nullors. particular, propose compute scattering matrices WD topological junctions absorbing nullors that less computationally demanding than techniques available literature on Filters. We show proposed turns out be particularly useful when simulating nonlinear through Scattering Iterative Method (SIM), fixed-point method recently developed solution nonlinearities, because it requires frequent update matrices. also provide novel convergence analysis SIM applied structures composed one-port elements junction order verify effectiveness methodology, discuss some implementations analog diodes opamps, including precision half-wave rectifier wave folder circuit.