Zebra 3 final final beta 21764 April 14

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Some last minute UI thoughts.

I'd hope the UI in the OSC curve editor could use some improvements...
56314eff-67c7-4d38-bef7-7a5814e8033f.png
f1292a81-1f62-4945-b51e-a342ab0ce369.png
The wavetable option leaves an ugly black box on the side, while the additive synth (highly suggest to rename the option as additive) option has the whole bottom area wasted. It would look much better if the additive parameters could be fit into the OSC panel itself and the black box removed...

The MSEG animation does not look good and doesn't really serve a lot of visualization purposes by itself... If time is a concern I'd highly recommend simply removing it from the UI element.
75c09c44-b250-4fac-ba83-2026c8c9e6c6.png
Anyway, kudos to the team and look forward to seeing the official release soon!
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You guys are GODLIKE. Amazing 🙏🏻🙏🏻🙏🏻

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The spectral decay still isn't working properly. The voice allocation options don't matter. High ENV release times = spectral decay stops retriggering when all voices have been used (VST3, CLAP).

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loctune wrote: Tue Apr 14, 2026 8:22 am Some last minute UI thoughts.

I'd hope the UI in the OSC curve editor could use some improvements...
56314eff-67c7-4d38-bef7-7a5814e8033f.png
f1292a81-1f62-4945-b51e-a342ab0ce369.png

The wavetable option leaves an ugly black box on the side, while the additive synth (highly suggest to rename the option as additive) option has the whole bottom area wasted. It would look much better if the additive parameters could be fit into the OSC panel itself and the black box removed...

The MSEG animation does not look good and doesn't really serve a lot of visualization purposes by itself... If time is a concern I'd highly recommend simply removing it from the UI element.
75c09c44-b250-4fac-ba83-2026c8c9e6c6.png

Anyway, kudos to the team and look forward to seeing the official release soon!
Wasn’t it possible to edit the MSEG points in that section with the previous UI? I miss that…

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johnnyberrygoode wrote: Tue Apr 14, 2026 7:33 am You've fixed all the graphics bugs that I've found, thank you very much. Except for one thing. In FMO and on many effects (the effects matrix), the lines on the controls are still shifted slightly away from the center.
Thank you! The FMOs flap and lower knob row of the Texture Verb has been fixed now. For the 8-Tap. We couldn't find any bad alignments there.

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I've found two bugs
- Init Preset isn't working properly
- Modulation display bug




Modulation display bug Preset
https://www.swisstransfer.com/d/78df137 ... d26e93f675

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jrgillam wrote: Tue Apr 14, 2026 7:38 am It would be nice if the drive parameter or the filters was greyed out or removed from the linear filters and any others where that parameter isn't applicable.
Yeah... Unfortunately it does not work "the usual way" as our panels have only up to 32 layers and we have 100+ filter responses. We'll be working on a new way at some point, as we had more pressing things to do...

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loctune wrote: Tue Apr 14, 2026 8:22 am ...
The MSEG animation does not look good and doesn't really serve a lot of visualization purposes by itself... If time is a concern I'd highly recommend simply removing it from the UI element.
75c09c44-b250-4fac-ba83-2026c8c9e6c6.png
...
It's very preset dependent. There is indeed a lot of presets using the MSEG to modulate parameters in a more complex manner. It helps understanding the patch in my book. Your screenshot is showing the "default mseg curve". There is also an option inside the preferences where you can set mappers and mseg rack modules not to be shown. Cheers!
Last edited by u-he Basti on Tue Apr 14, 2026 8:56 am, edited 1 time in total.

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Paragonfx wrote: Tue Apr 14, 2026 8:52 am I've found two bugs
- Init Preset isn't working properly
- Modulation display bug
Init Preset -> Bitwig bug in CLAP Undo layer
Modulation display bug -> we're on it

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loctune wrote: Tue Apr 14, 2026 8:04 am I'd suppose the SVF filter is built upon the SEM filter. AFAIK the SEM filter does not do self oscillation, while the SVF in Zebra 3 can have a quite strong behavior when resonance pushed high.

Is this something intentionally added?
The original SEM design is very limited that way, also because it's capped at 16 kHz while all of our filters in Z3 now open up to 30-35 khz. Furthermore the SEM filter can be made self oscillating by soldering one extra resistor into the circuit, so we did not feel the need to live with restrictions as Zebra is not an emulation of any particular synthesiser.

Just like the Yellow filter is a lot more versatile than the original Wasp filter design (more drive, more resonance, higher frequency range)

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exmatproton wrote: Tue Apr 14, 2026 8:36 am The spectral decay still isn't working properly. The voice allocation options don't matter. High ENV release times = spectral decay stops retriggering when all voices have been used (VST3, CLAP).
That's because you probably have the option "Continue" for voice stealing. Two options here: Reduce number of voices to 12 so excess voices get discharged. Or set Voice Stealing to "Steal min Latency" or "Steal min Clicking", depending on whether you can live with a few ms latency or a bit of clickiness.

But yeah, a trigger option for spectral decay will improve such things in the long run.

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Urs wrote: Tue Apr 14, 2026 9:07 am
exmatproton wrote: Tue Apr 14, 2026 8:36 am The spectral decay still isn't working properly. The voice allocation options don't matter. High ENV release times = spectral decay stops retriggering when all voices have been used (VST3, CLAP).
That's because you probably have the option "Continue" for voice stealing. Two options here: Reduce number of voices to 12 so excess voices get discharged. Or set Voice Stealing to "Steal min Latency" or "Steal min Clicking", depending on whether you can live with a few ms latency or a bit of clickiness.

But yeah, a trigger option for spectral decay will improve such things in the long run.
i..just..realized there is a whole world one right-click away on the Voice Allocation parameter.... :lol: :lol: :lol:
Indeed, a trigger option would be the best, but your tips for different kinds of allocation behind the right click, works fantastic for now. Thanks!

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u-he Basti wrote: Tue Apr 14, 2026 8:46 am
johnnyberrygoode wrote: Tue Apr 14, 2026 7:33 am You've fixed all the graphics bugs that I've found, thank you very much. Except for one thing. In FMO and on many effects (the effects matrix), the lines on the controls are still shifted slightly away from the center.
Thank you! The FMOs flap and lower knob row of the Texture Verb has been fixed now. For the 8-Tap. We couldn't find any bad alignments there.
Thank you!

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Urs wrote: Tue Apr 14, 2026 9:03 am
loctune wrote: Tue Apr 14, 2026 8:04 am I'd suppose the SVF filter is built upon the SEM filter. AFAIK the SEM filter does not do self oscillation, while the SVF in Zebra 3 can have a quite strong behavior when resonance pushed high.

Is this something intentionally added?
The original SEM design is very limited that way, also because it's capped at 16 kHz while all of our filters in Z3 now open up to 30-35 khz. Furthermore the SEM filter can be made self oscillating by soldering one extra resistor into the circuit, so we did not feel the need to live with restrictions as Zebra is not an emulation of any particular synthesiser.

Just like the Yellow filter is a lot more versatile than the original Wasp filter design (more drive, more resonance, higher frequency range)
And on the basis of which filter was the "expanse" created?

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johnnyberrygoode wrote: Tue Apr 14, 2026 9:43 am And on the basis of which filter was the "expanse" created?
A fast approximation of the CEM 3320, similar to Repro, but needed to be faster due to stereo filtering.

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