Strike
https://github.com/tmfset/er-301-custom-unitsA collection of filters + extras.
Units

A lowpass gate using the envelope from arc and a 12dB/oct biquad filter.
Also includes EOF/EOR gate outputs from the rise/fall controls as well as the envelope out from the height control.

A multi-mode biquad cascade filter with options for lowpass, bandpass, and highpass at either 12dB/oct, 24dB/oct, or 36dB/oct. Modeled after the equations outlined here by Robert Bristow-Johnson.
Output is tanh limited to give distortion at higher gain levels. This is particularly useful when pinging the filter at high resonance.

A state variable filter that mixes between lowpass, bandpass, and highpass. Modeled after the algorithm designed by Andrew Simper outlined here.
Output is tanh limited to give distortion at higher gain levels. This is particularly useful when pinging the filter at high resonance.


An AD envelope with loop toggle and bend control.
Also includes EOF/EOR gate outputs from the rise/fall controls.


A "fin" wave oscillator, so called because the wave resembles a shark fin.
Essentially this is just a different configuration of arc as an oscillator.


A formant oscillator based on the Mangrove module by Whimsical Raps.



A triangle (atan) oscillator with soft sync.

Limits the incoming signal with a tanh function.


A stereo peak compressor.
Includes a sidechain branch and optional auto makeup gain. Outputs available for the reduction signal as well as a gate for when the compressor is active.

A lowpass gate using a slew limiter envelope and a 6dB/oct filter.
Includes the slew output from the height control.
Latest GitHub release
Published on Saturday, August 7th 2021