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Mutable Instruments was a popular Eurorack module company from Normandy. The designer, engineer, and founder of Mutable Instruments, Émilie Gillet, has made all of her work open source. Volker Böhm has taken the time to port some of these modules to SuperCollider under the project title mi-UGens (no affiliation with Mutable Instruments).

Significant further work to make mi-UGens functional in Tidal was done by a large number of forum users, documented in this thread by @chrislo



All mi-UGens Synth modules support the following common SynthDef parameters

Supported parameters (default value)



Description: miOmi or "Ominous Voice", an almost vibraphone-like synth, electric bass lows and tinkling highs. omi does not take any extra parameters.


d1  $ s "omi" <| note "a [~ g] [c b] [g gs]" 
# octave "<3 4 5 6 7 8>"
# sustain "{1 2 1}%8"


Description: miBraids is a voltage-controlled monophonic digital sound source. Each algorithm is controlled by two continuously variable parameters, timbre and color. More information...

Parameter (def)RangeDescription
model (0)0-4748 available model selections, for details on each of the models see this manual
timbre (0.5)0.0-1.0model specific tone control
color (0.5)0.0-1.0model specific tone control


d1  $ s "braids" <| note "a [~ g] [c b] [g gs]" 
# octave "<3 4 5 6 7 8>"
# sustain "{1 2 1}%8"
# model (slow 48 $ run 48)
# timbre (slow 3 sine)
# color (saw)


Description: miPlaits is the spiritual successor of miBraids, with direct access to a large palette of easily tweakable raw sonic material, covering the whole gamut of synthesis techniques. More information...

Parameter (def)RangeDescription
engine (0)0-1516 available engine selections, the later numbers focus on noisy and percussive sounds. All engines are detailed in the Plaits engine page
timbre (0.5)0.0-1.0engine specific tone control - sweeps the spectral content from dark/sparse to bright/dense
harm (0.5)0.0-1.0engine specific tone control - harmonics controls the frequency spread or the balance between the various constituents of the tone
morph (0.5)0.0-1.0engine specific tone control - explores lateral timbral variations
level (1)0.0-1.0Opens the internal low-pass gate, to simultaneously control the amplitude and brightness of the output signal. Also acts as an accent control when triggering the physical or percussive models
lpgdecay (0)0.0-1.0adjust the ringing time of the LPG and the decay time of the internal envelope
lpgcolour (0)0.0-1.0adjust the response of the LPG, from VCFA to VCA
lpg d csee aboveconvenience function for simultaneous lpgdecay and lpgcolour control
mode (0)0-1synthdef specific mode to control signal mixing, more information


d1  $ s "plaits" <| note "a [~ g] [c b] [g gs]" 
# octave "<3 4 5 6 7 8>"
# sustain "{1 2 1}%8"
# engine (slow 16 $ run 16)
# timbre (slow 3 sine)
# harm (slow 4 saw)
# morph (slow 9 saw)
# level (slow 8 sine)


Description: miTides is a tidal (not, Tidal) modulator based on the concept of Flow (a voltage goes up) and Ebb (a voltage goes back to it's initial level). More information...

tidesshape (0.5)0.0-1.0shape of the ascending and descending segments
tidessmooth (0.5)0.0-1.0waveshape transformation, 0.0-0.5 smooths edges, 0.5-1.0 adds kinks and bumps along the slope
slope (0.5)0.0-1.0ratio between the durations of the ascending and descending segments
shift (0.5)0.0-1.0mode specific control, adjusting amplitude and other parameters
mode (2)0-3different output modes. For details see the Manual


d1  $ s "tides" <| note "a [~ g] [c b] [g gs]"
# octave "<3 4 5 6 7 8>"
# sustain "{1 2 1}%8"
# mode "<0 1 2 3>"
# shift (slow 5 sine)
# tidesshape (slow 7 sine)
# tidessmooth (range 0.2 1 $ slow 8 sine)
# slope (slow 3 sine)


verb (global)

Description: miVerb is a gentle reverb implemented as a global effect with a large number of tweakable parameters

verb w t d hnaconvenience function, combining wet, time, damp, and hp
verbgain0.0-1.0+gain level
verbwet0.0-1.0dry/wet mix
verbtime0.0-1.0+sustain time, be careful with feedback using values over 1
verbdamp0.0-1.0suppression on the sustain, higher values suppress more quickly
verbhp0.0-1.0smaller values emulate larger chamber spaces
verbfreeze0 | 1enable with 1, freezes the last reverb event allowing it to tail off completely
verbdiff0.0-1.0new verb events interact with existing verb trails, lower values for a more pronounced effect


d1  $ s "[[bd sd], linnhats*8]"
# verb 0.9 0.9 0.1 0.2

clouds (global)

Description: miClouds is a granular audio processor. It creates textures and soundscapes by combining multiple overlapping, delayed, transposed and enveloped segments of sound taken from an audio recording buffer. More information...

clouds p s d tnaconvenience function, combining pos, size, dens and tex
cloudsblend w s f rnaconvenience function, combining wet, spread, fb and rvb
cloudspos0.0-1.0selects from which part of the recording buffer the audio grains are played
cloudssize0.0-1.0grain size
cloudsdens0.0-1.0grain density
cloudstex0.0-1.0grain texture, morphs through various shapes of grain envelopes
cloudsgain0.0-1.0+gain level
cloudswet0.0-1.0blend wet/dry mix
cloudsspread0.0-1.0blend stereo spread
cloudsfb0.0-1.0WARNING values over 0.3 get dangerous - blend feedback amount
cloudsrvb0.0-1.0blend reverberation amount
cloudsfreeze0 | 1stops the recording of incoming audio, granularization is now performed on the last piece of audio
cloudsmode0-3infamous alternate modes, 0 = normal operation, 3 = spectral processor


d1  $ s "[[bd sd], [linnhats*8]]"
# clouds 0.1 0.5 0.05 0.1
# cloudsblend 1 0.2 0.33 0.8


Description: miElements is a modal synthesis voice effect, generating raw sounds from a variety of sound creation techniques (bowing, blowing, or striking). More information...

elementsstrength(-1.0)-1.0attenuates (negative) or amplifies (positive) the excitation signal
elementspitch0.0-1.0fundamental frequency of the resonator
elementscontour0.0-1.0envelope applied to the bow/blow exciters
elementsbowlevel0.0-1.0amplitude of scratching/bowing resonator
elementsbowtimb0.0-1.0smoothness of the bow material
elementsblowlevel0.0-1.0amount of granular blowing noise sent to the resonator
elementsblowtimb0.0-1.0pitch/granulation rate of the noise generator
elementsflow0.0-1.0airflow of the blow generator
elementsstrikelevel0.0-1.0amount of percussive noise sent to the resonator
elementsstriketimb0.0-1.0brightness/speed of the percussive excitation
elementsmallet0.0-1.0changes the type of percussive noise
elementsgeom0.0-1.0geometry and stiffness of the resonating structure, from plates, to strings, to bars/tubes, to bells/bowls
elementsbright0.0-1.0low values simulate wood/nylon, high values simulate glass or steel
elementsdamp0.0-1.0how quickly energy dissipates through the material
elementspos0.0-1.0simulate different string/surface excitation points
elementsspace0.0-1.0stereo width and amount of reverb applied to sound
elementsmodel0 | 1undocumented
elementseasteregg0 | 1undocumented


d1  $ s "[[bd sd], linnhats*8]"
# elementsstrength "0.9"
# elementspitch (slow 3 sine)
# elementsblowlevel 0.6
# elementsblowtimb (slow 5 sine)
# elementsflow "{0.3 0.6 0.7}"
# elementsstrikelevel 1
# elementsstriketimb 0.1
# elementsmallet rand
# elementseasteregg "[1 | 0 | 0]"
# elementsmodel "[0 | 1]"
# elementscontour (slow 5 saw)
# elementsgeom 2
# elementsbright (slow 7 saw)
# elementsdamp 0
# elementspos 0.314
# elementsspace 0.9


Description: miMu is a low frequency distortion effect, works best on long release, low frequency sounds

mu0-5+adjusts gain and applies a low frequency distortion


d1  $ s "bass1:1"
# mu 5
# gain 0.7


Description: miRings is a resonator effect with three families of vibrating structures simulated. More information...

rings f s b d pnaconvenience function
ringsfreq (440)0-1500+adjusts pitch, higher values are higher pitches, does not enjoy being patterned much
ringsstruct0.0-1.0model specific control, see the manual
ringsbright0.0-1.0adjust level of higher harmonics in the signal
ringsdamp0.0-1.0controls the decay time, smaller values for shorter decay
ringspos0.0-1.0excitation position
ringsmodel0 | 1toggle between modal, and sympathetic string resonators
ringspoly0 | 1toggle polyphonic mode on
ringsinternal0 | 1undocumented
ringseasteregg0 | 1undocumented


d1  $ s "[[bd sd], linnhats*8]"
# rings 100 rand 0.7 (slow 3 sine) 0.9
# ringsmodel "[0|1]"
# ringspoly "[0|1|0]"
# ringsinternal "[1|0|1|1]"


Description: miRipples is an analog 4 pole filter. More information...

ripples c r dnaconvenience function
ripplescf0.0-1.0cutoff frequency, 20Hz to 20kHz
ripplesreson0.0-1.0+resonance, self resonance occurs from ~0.75
ripplesdrive0-5gain level


d1  $ s "[[bd sd], linnhats*8]"
# ripplescf 0.4
# ripplesreson (range 0.5 1 $ slow 7 sine)
# ripplesdrive "{1 3 5}%2"


Description: miWarps offers a variety of wave-shaping and cross-modulation effects. More information...

warpsalgo0-7modulation algorithm. See the manual
warpstimb0.0-1.0intensity of high harmonics, or algorithm tone control
warpsosc0-3internal oscillator state and waveform
warpsfreq0.0-1.0external carrier amplitude or internal oscillator frequency
warpseasteregg0 | 1undocumented


d1  $ s "[[bd sd], linnhats*8]"
# warpstimb (slow 5 sine)
# warpsosc "<0 1 2 3>"
# warpsalgo "<0 1 2 3 4 5 6 7 6>"
# warpsfreq (slow 3 saw)
# warpseasteregg 1