JS Sweeper is an Ableton Live Extension that generates custom sweeps directly inside your project.

Simply select a time range on an audio track, launch JS Sweeper, and choose between noise-based sweeps, oscillator-based risers or a blend of both. The extension then generates a fully rendered sweep that matches the length of your selection.

Choose from White, Pink or Brown noise, Saw, Sine or Square oscillators, configurable pitch sweeps, adjustable noise/oscillator blending, filter sweeps, movement modulation, stutter effects, drive processing, phaser, flanger and chorus effects.

Stereo mode adds subtle channel variations and modulation offsets to create a wider and more spacious sound, while automatic normalization ensures consistent output levels regardless of the selected settings.

JS Sweeper then renders a 48 kHz / 24-bit WAV file and automatically imports it into your Live Set as a standard audio clip.

JS Operator Randomizer is an Ableton Live Extension that generates entirely new sounds for Ableton's Operator synthesizer.

Simply place an Operator device on a MIDI track, launch JS Operator Randomizer, choose an intensity mode, optional sound design settings and a seed value, then generate a completely new patch with a single click.

The extension randomizes Operator’s synthesis engine, including oscillator structure, FM algorithms, waveforms, envelopes, filters, modulation sources, stereo characteristics and output settings. Unlike preset browsers, JS Operator Randomizer creates entirely new sounds rather than selecting from an existing preset library.

Three intensity modes allow you to control how far the generated sound can deviate from its starting point. Subtle creates smaller variations, Balanced generates broader musical changes, and Wild explores more experimental territory.

Additional controls make it possible to lock volume envelopes, output volume and transpose settings while still randomizing the rest of the synthesizer. Safe Output mode helps prevent extremely loud or extremely quiet results, while Extreme Mode removes some of the safety limits and allows more aggressive FM structures, feedback amounts and modulation routings.

If no Operator device is present on the selected MIDI track, JS Operator Randomizer can automatically insert a new Operator instance before generating a sound.

Every generated sound is based on a reproducible seed value. Using the same seed and settings will always recreate the same result.

During sound generation, the extension window temporarily closes while Operator parameters are updated inside Live. Once the randomization process is complete, the window automatically reopens with your previous settings preserved, allowing you to quickly generate and audition multiple sounds without reopening the extension manually.