Euclidean Pro F2, Scratch Deck, ElevenLabs AI and Expanded Master Console — Omni Update Apr 23–28

Build: 25d00fc | April 23–28, 2026

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🔵 Euclidean Pro — Phase 2: Morph, Boolean Logic and Elektron Conditions

Euclidean Pro has undergone a complete transformation in Phase 2. This is no longer just a "rhythm generator" — it's a fully-featured rhythmic composition environment.

Morph Banks A/B/C/D + Mix Knob

• Four pattern banks (A/B/C/D) per channel — switch and morph between them in real time
• Morph Mix Knob — smooth transition between two banks; an LFO can modulate the morph position, creating organic rhythm evolution
• 24 factory presets using the Omni pitch map — ready-to-use patterns for instant results

Boolean Logic Between Channels

• AND / OR / XOR / AND-NOT operations between any rhythmic channels
• Example: kick AND-NOT hihat = kick hits only where there is no hi-hat → automatic "holes" without manual programming
• Real-time result, synchronized with the transport

Elektron-Style Step Conditions

• Each step can have a condition: 1:2 (every other time), 1:4, 2:3, FILL, NOT FILL, RANDOM…
• Patterns that never repeat — perfect for live breaks without looping

Other F2 Features

• Disk presets — save/load patterns to/from JSON files
• Mod Indicator — visual modulation activity indicator on each channel
• MIDI Channel per channel — each Euclidean channel sends MIDI on a separate channel
• Toolbar with audition — preview patterns without starting transport
• Velocity and probability lanes — per-step graphical editors

Phase 1 delivered RT-safety fixes: per-step LFO evaluation, pre-aggregated routing in the modulation matrix (O(slots+steps) instead of O(slots×steps×channels)), and a usize::MAX sentinel for the playhead when stopped.

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🎧 Scratch Deck — Virtual Turntable

Scratch Deck is a new built-in instrument — a virtual turntable with a pitch/speed curve editor, scratching, and precise playback control.

• Curve editor — draw the speed/pitch curve by hand; 2-axis pan + zoom with the mouse wheel
• 9 slot banks (M1–M9) — save different curves to slots and switch during playback
• Trim strip — mark the sample's working region; the turntable respects the trim window
• Vinyl disc — the active sample is painted onto the disc; the needle tracks the playhead visually
• Jog feedback — turntable coupling with the speed curve
• Undo/redo for curve and knob edits
• State saving — curves, banks and parameters are saved in the project via get_state/set_state (bincode); nothing is lost on reload
• Curves exported to .scratch JSON — portable between projects

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🤖 ElevenLabs AI — Generate Sounds with AI

Omni integrates the ElevenLabs Sound Effects API directly into the interface:

• Describe a sound in text → AI generates the audio file → it lands automatically in a clip on the track
• Secure API key storage — saved to ~/.config/omni/elevenlabs_settings.json with chmod 0600 permissions; never enters the project file or audio engine
• Local history — JSON manifest at XDG_DATA_HOME/omni/elevenlabs_history/; atomic writes; browse previous generations
• Test connection before use — key verification without downloading audio
• Blocking HTTP mode without tokio — zero overhead on the audio thread

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🖥️ Expanded Master Console — New Mastering Panel

Omni gets a dedicated mastering panel — Expanded Master Console — opened with the M shortcut. It's a separate workspace for finalizing the mix, with a full view of masters, returns, and export tools.

Master Strip and Return Strips

• Dedicated strip for the master bus and each return bus with its own fader, EQ, and FX chain
• Equal faders across all buses — consistent proportions regardless of the number of returns
• Layout pinned to chrome height — the panel doesn't jump on window resize

A/B Snapshots

• Two independent mastering slots: A and B — switch with one click to compare two approaches to volume, EQ and compression
• The active slot tracks edits live — adding a compressor to slot A doesn't disappear after switching to B and back
• Standard behavior familiar from Pro Tools and Cubase

Monitor Modes with Visual Indicator

• 9 monitoring modes: Stereo, Mono, L-only, R-only, Swap L/R, Mid, Side, DIM, MUTE + polarity inversion
• Master meters always show the signal after the monitor mode is applied — you hear and see the same thing
• Mode chip in the top bar — phosphor icon lit green when any mode other than Stereo is active

Metering and K-System

• K-System line on meters — K-12/14/20 visual reference always visible
• Peak, RMS and Pearson correlation in real time; LUFS and True Peak for export

Advanced PowR Dither

• Five algorithms: Off / TPDF / PowR1 / PowR2 / PowR3
• PowR uses hand-tuned noise-shaping curves (1/3/5-tap weighted FIR) — higher quality than plain TPDF for 16/24-bit conversion
• Dither active only when exporting to Wav16 and Wav24 — automatically disabled for Float32 output
• Algorithm and flag saved in the project

Bounce and Sequenced FX

• Bounce → Export button directly in the Master Console
• Sequenced FX available in the master and return chains — rhythmic effects on buses without workarounds

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🎙️ TOMiC Recording — Deep Polyrhythm Fix

Several serious bugs in TOMiC recording and playback have been eliminated:

• Phantom kick in arrangement — double-triggering of beat-0 on every loop iteration. Cause: the buffer right after crossing the loop boundary satisfied a false "overshoot" condition, firing beat-0 a second time. Fix: tracking prev_buffer_end — recovery only activates on a real transport discontinuity (seek, loop wrap), not on continuous forward playback
• Full TOMiC polyrhythm recorded — the recorder was using the default clip length (4 beats) instead of the actual pattern length (e.g. kick 32×1/32 = 8 beats). Effect: notes from beats 4–8 were discarded on every wrap. Fix: dynamic calculation of longest_channel_beats() from per-channel pattern data
• Monotonically growing record cursor — MIDI timestamps were based on pos_counter (which resets on session loop), so events from subsequent iterations collided with the first. The new record_cursor_samples never moves backward
• Duplicate notes on repeated playback — notes whose end extended beyond the loop boundary caused clip.length to inflate to a multiple, generating loop_count = 2 and double-triggering. Fix: clamp duration to the segment boundary + constant clip length = loop_len_samples

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🎲 Randomizer with Braids Algorithms

The built-in melody randomizer integrates algorithms from the Braids engine (Mutable Instruments):

• A dozen generative algorithms: FM, chord, wavetable, noise…
• Waveform preview — see the waveshape before accepting the randomization
• Works with the active scale and calibrated pitch map

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📦 Session and Arrangement — UX

• System drag-and-drop to arrangement — drag an audio/MIDI file from the file manager directly onto the timeline
• Queued clip sync — a queued clip syncs to the longest currently playing clip (not the global clock)
• Clip arming preserved after transport stop
• Double-click on an audio clip opens the Sample Editor (not Piano Roll)
• Unified Add FX menu on tracks, returns and master — the same list everywhere
• Step Sequencer: auto-randomize with interval/offset — randomize every N-th step; shift L/R rotates the mute array together with the steps

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🔧 OmniScript — 15 New Examples

15 new OmniScript plugins join the examples/scripts/ folder:

• Modulators, MIDI FX and Audio FX — complete examples ready to use as a starting point
• Documentation in docs/OMNISCRIPT.md updated with the new API

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Omni is actively developed — the next update is coming soon. 🚀

With this update, the pre-alpha phase is officially complete, and the project is now entering the alpha phase.

Scratch Deck or Euclidean Pro Morph — which one lands in your project first? Let us know.