SIMULATING GUITAR DISTORTION CIRCUITS USING WAVE DIGITAL A ND NONLINEAR STATE-SPACE FORMULATIONS
David T. Yeh, Julius O. Smith · 2008
This work extends previous research on numerical solution of nonlinear systems in musical acoustics to the realm of nonlinear musical circuits. Wave digital principles and nonlinear st ate-space simulators provide two alternative approaches explored in this work. These methods are used to simulate voltage amplification stages typically used in guitar distortion or amplifier circuits. Block level analysis of the entire circuit suggests a strate gy based upon the nonlinear filter composition technique for connect ing amplifier stages while accounting for the way these stages in teract. Formulations are given for the bright switch, the diode clipper, a transistor amplifier, and a triode amplifier.