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Factorsynth 2 DEMO

Machine Learning in Ableton Live


Developer: JJ Burred
Compatibility: Ableton Live 10/11 Suite or Ableton Live 10/11 Standard with MaxforLive Installed
OS: Mac & Windows
Min. Requirements: MaxforLive 7 is Essential



There are two editions of Factorsynth: the full edition and a free demo version. Both are based on the same decomposition engine, but the full version has a wider range of synthesis operations and no length limitation. This table compares both versions’ main features:

If you wish to upgrade to the Full version you will find it here – FACTORSYNTH 2

Factorsynth Demo vs Full Version Comparison



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v2.0 – 10/7/2020

– Avoid clicks when shifting components
– Avoid gain boost in host mode
– Bugfix: changing global levels bypassed the mute buttons
– Fixed some audio dropouts when moving dials
– Fixed memory allocation crashes on Mac OS Catalina
– Fixed crash when clicking on operation buttons after changing component number
– Fixed info window annotations

v2.0b4 – 4/6/2020

– Double/half tempo buttons
– Display left-right output as 2 superimposed waveforms
– New colors
– Fixed some undo issues
– Bugfix: display correct gain after shifting
– Normalize temporal shape displays if using algorithm B
– Windows bugfix: was not re-factorizing when reloading
– Bugfix: make sure output is zero if no components are selected
– Avoid loop clicks
– Bugfix: reset loop length after factorizing new master sound

v2.0b3 – 14/5/2020

– added zoom button
– increase the maximum gain to 16 dB
– Bugfix: show cancel button while exporting files
– Fixed crash when changing number of components while factorizing
– Fixed text overruns in Windows
– Fixed MIDI parameter names

v2.0b2 – 29/4/2020

– Fixed Max interface
– Some annotation fixes
– Bugfix: select right buffer for bouncing
– Updated manual to v2

v2.0b1 – 27/4/2020

– Import master sound by drag and drop
– Instant loading of warped or transposed tracks (instead of real-time recording)
– Playback and looping is now controlled from the device (solves sync problems)
– Loading from encrypted pack samples is now possible
– New decomposition algorithm available
– Iteration number is now a user parameter
– Panning controls for the components
– Possibility to select looping region on output waveform
– Temporal component shifting
– Playback cursor now covers all temporal shapes
– Thresholding of component amplitudes
– Factorizes right away when loading from presets
– Randomly add or remove individual components
– All-on operation buttons
– Hide cancel button while processing
– Avoid clicks when stopping
– Transport control and master file display on device window
– New output gain dial
– Button to open Max console
– Several small fixes is STFT computation
– Some memory optimizations in NMF computation

v1.5 – 2/5/2019

– Using the device from Max is now supported
– Multiple device instances are now supported
– Bugfix: keep saved switchboard connections after loading set with warped clips

v1.4 – 28/2/2019

– Manual MIDI assignment of the first 8×8 switchboard buttons.
– Automatic mapping of the switchboard for Launchpad and Push surface controllers.
– Allow to resize main interface window.
– Bugfix: correct instant launching of clips shorter than one beat.
– Prevent drag&drop to input and output waveforms.

v1.3 – 8/11/2018

– Added clear buttons.

– Avoid saving temporal and spectral elements to undo history (won’t be saved to presets).

– Bugfix in session view looping : was missing loop restart during heavy computations.

– Clear output waveform when changing tempo.

v1.1 – 27/8/2018

– Solved several looping problems in session view.

– Bugfix in element drawing when loading from preset or saved live set.

– Use fs_out.wav as default file name when bouncing to file.

– Bugfix: unwarped but transposed clips were not being recorded.

v1.0 – 10/7/2018

– Initial release



“Quite magical.” – ASK AUDIO

“A powerful instrument for breaking down audio loops in to timbral and spectral elements that can be remixed and exported in astoundingly cool ways.” – THE PRO AUDIO FILES


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Our Products are generally provided as Zip file downloads which in all cases will need to be extracted and saved to your hard drive prior to installation. Details on the different file type provided and what to do with them are below.

.alp Files – These are Ableton Live Packs and will install directly into the Packs Section of the browser of Ableton Live. When you double click on them you will see a pop up window asking you to confirm that installation is ok as the files are described as “Legacy”. This is fine and you are ok to proceed, the packs are created using the format for an earlier version of Live and so remain compatible with the current version.

.amxd files – These are individual MaxforLive Devices and can be stored anywhere on your hard drive. We’d advise creating a folder for them and then adding that folder as a location within the Places section of Lives Browser.

Control Surface Scripts – Please refer to the individual User Guides provided with your download, an abridged version of the installation will be shown further down this page.

ClyphX Pro – Please refer directly to the manual and installation video for this specific product.

Novation Circuit Packs – These are provided as individual Sysex Files and as a complete bank file. All are to be installed using a version of the Circuit Editor and not via Novations Components back up utility.



J.J. Burred is an independent researcher, software developer and musician based in Paris.With a background in machine learning and signal processing, his work aims at developing innovative tools for music and sound creation, analysis and search.After earning a PhD from the Technical University of Berlin, he worked as a researcher at IRCAM and Audionamix, on topics such as source separation, automatic music analysis, sound classification, content-based search and sound synthesis. His current main activity concerns the exploration of machine learning techniques for new methods of sound analysis/synthesis aimed at musical creation.LINKS: WEBSITE – FACEBOOKYOUTUBESOUNDCLOUD 

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