DIY Eurorack Builds

Digital Filter Simulator

Analog digital-filter emulation ยท Nonlinear Circuits

MakerNonlinear Circuits
TypeAnalog digital-filter emulation
MountingThrough-hole
Width12 HP
LicenseProprietary (No licence published)
Difficulty ๐ŸŒก๏ธ Medium through-hole
Digital Filter Simulator module
Photo: Nonlinear Circuits

An all-analogue CMOS and op amp circuit that emulates a generalised digital filter, based on a 1969 IEEE paper on sampled-data controllers. Audio or CV is fed to a 4 bit stage. Also works as a pattern generator.

Documentation

This is a third-party open-source design, listed here as a build reference. Specs are researched from public sources; check the source repo and store for the current BOM, panel, and revision before ordering parts. Corrections welcome.

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