Digitizing the schumann electronics PLL analog harmonizer

Isaiah Farrell*, Stefan Bilbao

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

The Schumann Electronics PLL is a guitar effect that uses hardwarebased processing of one-bit digital signals, with op-amp saturation and CMOS control systems used to generate multiple square waves derived from the frequency of the input signal. The effect may be simulated in the digital domain by cascading stages of statespace virtual analog modeling and algorithmic approximations of CMOS integrated circuits. Phase-locked loops, decade counters, and Schmitt trigger inverters are modeled using logic algorithms, allowing for the comparable digital implementation of the Schumann PLL. Simulation results are presented.
Original languageEnglish
Title of host publicationProceedings of the 27th International Conference on Digital Audio Effects (DAFx24)
Place of PublicationSurrey, UK
Pages111-118
Number of pages8
Publication statusPublished - 7 Sept 2024
Event27th International Conference on Digital Audio Effects - Surrey, United Kingdom
Duration: 3 Sept 20246 Sept 2024

Publication series

NameProceedings of the International Conference on Digital Audio Effects
ISSN (Print)2413-6700
ISSN (Electronic)2413-6689

Conference

Conference27th International Conference on Digital Audio Effects
Country/TerritoryUnited Kingdom
CitySurrey
Period3/09/246/09/24

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