MicroFreak - Oscillators

Do you have questions about MicroFreak's oscillators?
You will likely find an answer here:

The oscillators modes are a panel of different algorithms, which lets MicroFreak generate a wide variety of sounds.
The algorithms are:

Find below the brand new algorithms built by our team in Arturia Headquarters:
Virtual analog, recreating traditional synth methods digitally for a mix of classic and cutting-edge tones.
Precisely detuned saw, square, sine, or triangle waves let you create the fattest synth sounds around. Perfect for Trance and lush dreamy pads.
Synthesize your sound from 32 sine waves by modulating their volume. The clue is in the name, it creates harmonically rich, vibrant sounds which can be shaped with the filter.
A much-loved synth method using physical modelling to recreate the sound of string instruments, from soft pizzicato to screeching, zingy chords.
Scan through waveform snapshots to find new, unusual, and evolving sounds. It contains 16 wavetables to explore, with room for more in the future.
We’ve also integrated the open-source Plaits oscillator developed by Eurorack legends Mutable Instruments to bring you 7 additional synth modes.
A triangular wave, processed by waveshaping and wavefolding creating squelchy, aggressive, and often metallic tones.
A simple but powerful twin-operator FM oscillator, with two sine waves modulated each other’s phase to create sharp, acidic tones.
A percussive, granular synthesis engine that is great for adding huge texture and body to sequenced rhythms.
A paraphonic synth engine that triggers duplicates at set intervals, creating defined, static chords with one key, perfect for trance-inspired melodies.
An engine that creates vowel, formant, and simple word sounds. Automate with the mod matrix, and hear MicroFreak come alive!
Recreates the unique inharmonic vibrations and resonance of a hollow structure. Perfect for adding texture, or bizarre overtones to your music.

Noise Engineering presented 3 prototype algorithms designed for their upcoming DSP oscillator platform, offering a choice of 2 to port for MicroFreak.

After some deliberation and quite a bit of French charm, it was decided that all 3 would be used - each one had such a strong identity and exciting sound, that it was simply impossible to choose.

These amazing oscillators are available for your MicroFreak for free. You can download them here.


A lean, mean, low-end machine. This non-linear waveshaping algorithm uses a quadrature oscillator principle to produce unique waveforms. The result is ultra-heavy digital density and gritty in-your-face bass that demands your full attention.

Controls: Saturate, Fold, Noise

Audio Player

Bass mode becomes a flickering lead with added dusty cartridge character to taste.

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Japan Xeno

Bass mode brings filthy basslines galore with this bubbling detuned monstrosity.


Harm mode combines additive synthesis with wavefolding to produce shimmering textures with heaps of overtone detail. Think of the classic hard sync sound, but from a different dimension - choose dense octave overtones or blow the harmonic series wide open.

Controls: Spread, Rectification, Noise

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Far Away

Peaceful daydream pads with bright overtones and subtle watery swirls, courtesy of Harm mode.

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Harm mode going full octave sparkle, bringing some sonic sunlight to a cloudy mix.


Relatively straightforward sawtooth manipulations with complex sonic results. SawX is the supersaw sound contorted and sharpened beyond recognition. With added chorus and phase modulation, it’ll bring the dirt in no time.

Controls: Saw Mod, Chorus Amount, Noise

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I Saw It B4

A rusty buzzsaw pluck from SawX mode that’s small in size but big in vibes.

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Classic video game boss fight basslines, with Bass mode bringing the lo-fi distorted low-end.

The WaveUser oscillator model is a new addition to the existing oscillator models, brought by the 4.0 firmware update.


The WaveUser oscillator model works much like the Wavetable Oscillator, with the important addition that you can load your own wavetables using the MIDI Control Center software.

Here are the steps to load your own wavetables:

  • First, connect your MicroFreak to your computer, and go check the Wavetables tab in the MIDI Control Center.

  • wavetablestab

  • Second, check the top of the Computer section and look for the Import button.

  • importbutton

  • Then, choose one of the three options at your disposal to import the desired wavetable. You can either replace the currently selected Wavetable with a file of your choosing (MFWZ format or WAV/AIFF format), or import a new bank of your choosing, which will show up in the Computer section.


  • Finally, once you've imported your wavetable, click on the Send to MicroFreak button to send the whole bank of 16 wavetables to the MicroFreak.

  • sendtomicrofreak

It is that easy.

Even better, you can now drag and drop individual Wavetables between the computer and MicroFreak in either direction.


If you want more detailed information about wavetable management, and the new drag and drop feature, please refer to section and of the MicroFreak manual.

Note: Please keep in mind that if you use these wavetables in a preset, and that you make changes to those, the preset will be changed as well.

If you have any further questions, feel free to contact us.