Modeling and Extending the Rca Mark Ii Sound Effects Filter

Kurt James Werner; Ezra J. Teboul; Seth Cluett; Emma Azelborn
DAFx-2022 - Vienna
We have analyzed the Sound Effects Filter from the one-of-a-kind RCA Mark II sound synthesizer and modeled it as a Wave Digital Filter using the Faust language, to make this once exclusive device widely available. By studying the original schematics and measurements of the device, we discovered several circuit modifications. Building on these, we proposed a number of extensions to the circuit which increase its usefulness in music production.