Wave-Digital Modeling of Hacked Tube Screamer Circuits: Generalizing and Improving the Diode Model

Description

The Tube Screamer, a classic guitar distortion effect pedal, has been studied from several perspectives in the context of virtual analog (VA). This talk will focus on extending a Wave Digital Filter (WDF) model presented by Paiva et al. in "Emulation of Operational Amplifiers and Diodes in Audio Distortion Circuits" (2012). Our extensions focus on the mathematics of (1) a novel, exact, wave-domain diode equation that ameliorates the approximation introduced by Paiva et al. and (2) generalizations to the exact and approximated diode models that allow the simulation of a range of common circuitry "mods" used by guitarists. These extensions highlight the potential for VA simulation of "modded" and "circuit-bent" versions of audio circuitry. with Vaibhav Nangia

Period	25 Feb 2015
Held at	Stanford University, United States, California