Eurorack Oscillators for Korg prologue, minilogue xd and Nu:tekt NTS-1
Ports of some of Mutable Instruments (tm) oscillators to the Korg "logue" multi-engine.
See releases for latest binaries.
| Name | Oscillator |
Shift-shapeoperation | |--|--|--|--| |
mo2_va| Pair of classic waveforms | Shape | Pulse width | |
mo2_wsh| Waveshaping oscillator | Amount | Waveform | |
mo2_fm| Two operator FM | Modulation index | Frequency ratio | |
mo2_grn| Granular formant oscillator | Frequency ratio | Formant frequency | |
mo2_add| Harmonic oscillator |Index of prominent harmonic | Bump shape | |
mo2_wta* | Wavetable: Additive (2x sine, quadratic, comb) | Row index | Column index | |
mo2_wtb* | Wavetable: Additive (pair, triangle stack, 2x drawbar) | Row index | Column index | |
mo2_wtc* | Wavetable: Formantish (trisaw, sawtri, burst, bandpass formant) | Row index | Column index | |
mo2_wtd* | Wavetable: Formantish (formant, digiformant, pulse, sine power) | Row index | Column index | | `mo2wte
* | Wavetable: Braids (male, choir, digi, drone) | Row index | Column index | |mo2wtf
* | Wavetable: Braids (metal, fant, 2x unknown) | Row index | Column index | |mo2string` | Inharmonic string model | Decay | Brightness |
* Due to the 32k size constraint in the multi-engine the Wavetable oscillator is split into 6 oscillators of 8 rows (scannable by Shape) by 4 columns (scannable by Shift-shape)
In the Multi-engine menu you can find additional parameters for the oscillators.
Parameter 1is oscillator specific and controls whichever parameter is not mapped to
Parameter 2sets the mix between the oscillator
LFO Targetsets the Shape LFO target, see list below.
LFO2 Rateis rate of LFO2.
LFO2 Intis intensity (depth) of LFO2.
LFO2 Targetsets the target for LFO2 according to the list below.
The oscillator has a built-in additional cosine key-synced LFO which can module an internal parameter (set with the
LFO2 Targetparameter in the oscillator menu):
| LFO Target | Parameter | Notes | |------------|---------------|-------| | 1 |
Shape| | | 2 |
Shift-shape| | | 3 |
Parameter 1| Not implemented for Wavetable oscillator | | 4 |
Parameter 2| | | 5 |
Pitch| | | 6 | reserved (Amplitude?) | | | 7 |
LFO2 Rate| | | 8 |
LFO2 Int| |
For more information please read the excellent Mutable Instruments Plaits documentation.
Many parameters 'neutral' settings are in center position, such as
fmFeedback, however the prologue defaults all parameters to the lowest value, hence get used to going into the menus and set the first parameter to 50% when instantiating the oscillator.
Physical modeling synthesis
| Name | Oscillator | |--|--| |
mod s| Strike exciter with modal resonator |
| Parameter | Parameter | LFO Target | Notes | |-------------------------|-----------------------|------------|-------| |
Shapeknob | Resonator position | 1 | Position where the mallet strikes, has a comb-filtering effect. | |
Shapeknob | Resonator geometry | 2 | Geometry and stiffness of resonator. Set to 25-30% for a nice tuned sound. | |
Strengthmenu | Strike strength | 3 | Mallet strength, high values causes the strike to bleed into the resonator output. | |
Malletmenu | Strike mallet | 4 | Type of mallet, over 70% is bouncing particles. | |
Timbremenu | Strike timbre | 5 | Brightness/speed of the excitation. | |
Dampingmenu | Resonator damping | 6 | The rate of energy dissipation in the resonator. High values cause long release effect. | |
Brightnessmenu | Resonator brightness | 7 | Muting of high frequencies | |
LFO Targetmenu | multi-engine
ShapeLFO target | | Sets which parameter is modulated by the
ShapeLFO (see LFO Target column) |
For more information please read the excellent Mutable Instruments Elements documentation.
Due to compute and memory (32K!) limitations in the prologue multi-engine quite a few short-cuts had to be taken:
Sounds pretty great IMO but go buy Elements for the real experience!
When you first select the oscillator it will make no sound, all parameters are at 0%! Increase the
Dampingparameters until you start hearing something.
Try a nice pluck:
| Parameter | Value | |---------------------|--------| |
Shape| 50% | |
Shape| 30% | |
Strength| 90% | |
Mallet| 45% | |
Timbre| 45% | |
Damping| 70% | |
Brightness| 45% |
The prologue Sound Librarian tends to timeout when transferring the user oscillator, however the transfer is still complete. Try adding the user oscillator one at a time and Send All / Receive All for each oscillator.
There's been many reports that the Modal Resonator oscillator doesn't produce any sound. I've included a few versions which lower CPU usage which may yield better results. On my prologue there's been cases where I've had issues after a factory-reset where the oscillator wouldn't produce sound. Installing sequentially in the same oscillator slot the lightest CPU version
osc_modal_strike_16_nolimit(16 filters and removed limiter), followed by
osc_modal_strikeresolved the issue for me. Your milage may vary.
When first selecting the oscillator in the multi-engine, all values default to their minimum values, however the display seems to default to 0. For bipolar values it means the display might still show 0% while internally in the oscillator the value is -100%.
jqtool installed (
brew install jq)
(only tested on MacOSX)
All credit to Emilie Gillet for her amazing modules!