Noemi: A non-deterministic composition machine, from Tweakbench (BETA TEST)

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glad you dig it. it’s very early software.. so expect it to get more refined as i go. better visuals, better connectivity, better compatibility
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An article at CDM, you are honoured :)

https://cdm.link/noemi-alpha/
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Huh! Just saw this. Shades of Audiomulch, which is good! Will check this rainy weekend.
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I was happy to see the Tweakbench plugins back on modern systems, even if I don't personally have a need for them anymore. This though? This seems right up my alley. If this can capture some of the fun I had with EnergyXT or Audiomulch I'll be very happy!
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I've just published Noemi 0.9.1 ALPHA
https://www.tweakbench.com/alpha

Changelog:
- MIDI effect plugin support — host MIDI-in/MIDI-out plugins (arpeggiators, chord generators, step sequencers)
- Auto-detection — AU aumf and VST3 zero-channel plugins identified as MIDI effects, shown in Instruments menu with "(MIDI Effect)" suffix
- Manual toggle — "Use as MIDI Effect" in plugin editor for plugins like Stochas that mis-register as instruments
- VoiceOver accessibility — accessible titles/descriptions on all controls across every panel
- VoiceOver accessibility - custom accessibility handlers on nodes and canvas, VoiceOver announcements for all key actions
- Audio input recording — record button on Waveform and Slicer panels
- Keyboard shortcuts — C to connect selected node, D to disconnect
- Audio Settings dialog — escape closes, native title bar, resizable
- Fix — Generate Song now uses correct internal instrument names
- Fix — MiniNotation octave convention matches standard middle C = C3
- Fix — Bug where key commands would not be enabled
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Ableton Link and/or Link Audio would be smashing
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The linux build segfaults on debian sid:

Audio block size: 512 Rate: 44100
Creating Default Controllers...
13:06:43.128 WARN [NoemiEngine.cpp:66] REX SDK not available — .rex/.rx2 files will not be loadable
Segmentation fault ./Noemi

I can see a window start to open in the top left of the screen before it happens.

Log output:

13:06:42.977 INFO [Logger.cpp:38] === Noemi Session Started ===
13:06:42.978 INFO [Logger.cpp:39] Log file: /home/me/.config/Noemi/Logs/noemi_20260308_130642.log
13:06:42.978 INFO [Main.cpp:38] Initializing Noemi application
13:06:42.979 INFO [WaylandScaleHelper.cpp:61] WaylandScaleHelper: Wayland compositor detected
13:06:42.979 DEBUG [WaylandScaleHelper.cpp:73] WaylandScaleHelper: set GDK_SCALE=1, GDK_DPI_SCALE=1
13:06:42.979 DEBUG [NoemiLookAndFeel.cpp:346] Loading Inter fonts
13:06:43.063 INFO [NoemiLookAndFeel.cpp:367] Inter fonts loaded successfully
13:06:43.064 INFO [NoemiLookAndFeel.cpp:372] Material Icons font loaded successfully
13:06:43.067 DEBUG [Main.cpp:53] Look and feel initialized
13:06:43.068 DEBUG [Main.cpp:151] Creating main window
13:06:43.127 INFO [NoemiEngine.cpp:35] Audio device: Default ALSA Output (currently PipeWire Media Server), SR=44100, bufSize=512, outCh=64
13:06:43.127 INFO [NoemiEngine.cpp:146] Installed hybrid plugin scanner (VST3 out-of-process, AU/CLAP in-process)
13:06:43.128 WARN [NoemiEngine.cpp:66] REX SDK not available — .rex/.rx2 files will not be loadable
13:06:43.129 INFO [PresetManager.cpp:42] PresetManager: scanned 0 presets
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sprnva wrote: Sun Mar 08, 2026 1:09 pm The linux build segfaults on debian sid:

Audio block size: 512 Rate: 44100
Creating Default Controllers...
13:06:43.128 WARN [NoemiEngine.cpp:66] REX SDK not available — .rex/.rx2 files will not be loadable
Segmentation fault ./Noemi

I can see a window start to open in the top left of the screen before it happens.

Log output:

13:06:42.977 INFO [Logger.cpp:38] === Noemi Session Started ===
13:06:42.978 INFO [Logger.cpp:39] Log file: /home/me/.config/Noemi/Logs/noemi_20260308_130642.log
13:06:42.978 INFO [Main.cpp:38] Initializing Noemi application
13:06:42.979 INFO [WaylandScaleHelper.cpp:61] WaylandScaleHelper: Wayland compositor detected
13:06:42.979 DEBUG [WaylandScaleHelper.cpp:73] WaylandScaleHelper: set GDK_SCALE=1, GDK_DPI_SCALE=1
13:06:42.979 DEBUG [NoemiLookAndFeel.cpp:346] Loading Inter fonts
13:06:43.063 INFO [NoemiLookAndFeel.cpp:367] Inter fonts loaded successfully
13:06:43.064 INFO [NoemiLookAndFeel.cpp:372] Material Icons font loaded successfully
13:06:43.067 DEBUG [Main.cpp:53] Look and feel initialized
13:06:43.068 DEBUG [Main.cpp:151] Creating main window
13:06:43.127 INFO [NoemiEngine.cpp:35] Audio device: Default ALSA Output (currently PipeWire Media Server), SR=44100, bufSize=512, outCh=64
13:06:43.127 INFO [NoemiEngine.cpp:146] Installed hybrid plugin scanner (VST3 out-of-process, AU/CLAP in-process)
13:06:43.128 WARN [NoemiEngine.cpp:66] REX SDK not available — .rex/.rx2 files will not be loadable
13:06:43.129 INFO [PresetManager.cpp:42] PresetManager: scanned 0 presets
I've repro'd the linux segfault, and have a fix on the way. should be in 0.9.2
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0.9.2 is released - and should address the Linux seg fault. It also adds the initial versions of Plugins of the app to run inside other DAWs.
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Hate to be the bearer of bad news but it's not happy here at all. Both vst3s crash Ardour when opened. The Noemi standalone still segfaults. The Noemi vst3 opens ok in BespokeSynth but the FX version freezes it when trying to open the UI.

There's nothing of note in the logs so I'm not sure what I can post to help figure things out further.
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sprnva wrote: Tue Mar 10, 2026 11:40 am Hate to be the bearer of bad news but it's not happy here at all. Both vst3s crash Ardour when opened. The Noemi standalone still segfaults. The Noemi vst3 opens ok in BespokeSynth but the FX version freezes it when trying to open the UI.

There's nothing of note in the logs so I'm not sure what I can post to help figure things out further.
There seems to be a LOT of issues with the first build of the plugins. I'll need to do a lot more work with the test harness to get the OS compatibility up.
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tweakbench wrote: Tue Mar 10, 2026 5:03 pmThere seems to be a LOT of issues with the first build of the plugins. I'll need to do a lot more work with the test harness to get the OS compatibility up.
Thanks for trying. I'm sure you'll get it hammered out. If it helps I'll keep posting my findings here.
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Awww, didnt realise was a VST plugin as well!

Just tried loading in Bitwig 5.3
Instant Crash without even getting a peak at the interface.

Loads fine In Live 12.3
I like it has preloaded patterns / samples in the modules so you can try it out real quick.
Happy to discover it has undo feature :)
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VariKusBrainZ wrote: Tue Mar 10, 2026 7:33 pm Awww, didnt realise was a VST plugin as well!

Just tried loading in Bitwig 5.3
Instant Crash without even getting a peak at the interface.

Loads fine In Live 12.3
I like it has preloaded patterns / samples in the modules so you can try it out real quick.
Happy to discover it has undo feature :)
what OS?
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tweakbench wrote: Tue Mar 10, 2026 7:49 pm
VariKusBrainZ wrote: Tue Mar 10, 2026 7:33 pm Awww, didnt realise was a VST plugin as well!

Just tried loading in Bitwig 5.3
Instant Crash without even getting a peak at the interface.

Loads fine In Live 12.3
I like it has preloaded patterns / samples in the modules so you can try it out real quick.
Happy to discover it has undo feature :)
what OS?
:dog:

win11
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