Wobbly Paraphonic Erebus
Two of the coolest features of the Dreadbox Erebus is its paraphonic mode and the semi-modular patching. I used its paraphony and LFO rate input to create a patch that allowed for some greasy wobbles between a bass note and a simple melody:
In the rest of this post I'll show how this was made.
First off, I operate from code. I created a basic pattern using Tidal that simulated playing a single low note along with a melody of higher notes. In this case it's an A3 bass note (MIDI note 45), with random notes selected from an A3 phrygian scale for the "melody":
k7 $ whenmod 16 8 (|+| note "-5") $ stack [ note "45/4" |+| dur "4.5", (|+| note (choose [0,12,12,24])) $ chooseMidi "45" phryg "0*8?" |+| dur "0.15" ] |+| modwheel (rand)
You can see the bass and melody parts inside the
whenmod 16 8 (|+| note "-5") part just lowers the entire thing by five half steps every eight bars. The
modwheel (rand) applies a random mod wheel value on every note that is played.
OK, then on to the Erebus. Some patching and specific knob settings are required to get the specific sound. Here's a picture of the synth in the state when the recording was made:
First, the patching:
- Envelope out to VCA in
- LFO out to VCF in
- MOD out to LFO/R in
The a few other key settings:
- LFO Rate at about 10 o'clock
- LFO Depth all the way up
- LFO wave type set to triangle
- Osc1 wave length set to 16
- Osc2 wave length set to 4
- Osc mix at 50%
- Filter cutoff around 50%
- Envelope sustain around 50%
- Set unison to paraphonic
The two-oscillator paraphony is really fun. I imagine there are a lot of quirks and surprises that can come out of this synth's paraphonic mode when code is used to send MIDI notes in unexpected ways. More experiments for the future!