Deimos - free synthesizer (Windows, MacOS, Linux)

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Deimos

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Nug Wrangler wrote: Fri Oct 24, 2025 3:48 pm Selene perhaps? Selene is the goddess of the moon in Greek mythology
Too late! viewtopic.php?t=624692
I hate signatures too.

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Super Piano Hater 64 wrote: Tue Oct 28, 2025 4:11 pm
Nug Wrangler wrote: Fri Oct 24, 2025 3:48 pm Selene perhaps? Selene is the goddess of the moon in Greek mythology
Too late! viewtopic.php?t=624692
Ah, well.
FL Studio 25 | AudioThing JULY - Deimos - U-he Filterscape - NI Kontour - Softube Model 80 - LUSH-2 - UAD Opal - WaveOSC

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New version 1.0.0-beta.4 is now available!

- Fixed a bug with some LFO times slower than 1/1 not working correctly
- Fixed a minor preset browser bug that messed up scrolling
- Added a second variation of the "random harmonics" wave mode
- The "sequence" auxiliary modulator now has an "alloc" mode, where each played note gets successive steps from the defined sequence
- Max polyphony was raised to 8

I'm also slowly building some factory presets, hoping to include some in another update soon.

Also considering to add an "eco mode" option that would process oscillators with less demands on cpu.
It depends on the used shaping modes and modulation, but there should be many cases where using less cpu still gives high quality results.

Nug Wrangler wrote: Tue Oct 28, 2025 4:46 pm
Super Piano Hater 64 wrote: Tue Oct 28, 2025 4:11 pm
Nug Wrangler wrote: Fri Oct 24, 2025 3:48 pm Selene perhaps? Selene is the goddess of the moon in Greek mythology
Too late! <span class="skimlinks-unlinked">viewtopic.php?t=624692</span>
Ah, well.
Oof, naming things is difficult :lol: :lol:
The idea was to name this synth and the upcoming commercial one after moons in our solar system, so I'm considering Deimos as an alternative, since that's a rather small moon.
We'll see ..

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Tom Trnk wrote: Thu Oct 30, 2025 8:52 pm New version 1.0.0-beta.4 is now available!

- Fixed a bug with some LFO times slower than 1/1 not working correctly
- Fixed a minor preset browser bug that messed up scrolling
- Added a second variation of the "random harmonics" wave mode
- The "sequence" auxiliary modulator now has an "alloc" mode, where each played note gets successive steps from the defined sequence
- Max polyphony was raised to 8

I'm also slowly building some factory presets, hoping to include some in another update soon.

Also considering to add an "eco mode" option that would process oscillators with less demands on cpu.
It depends on the used shaping modes and modulation, but there should be many cases where using less cpu still gives high quality results.

Nug Wrangler wrote: Tue Oct 28, 2025 4:46 pm
Super Piano Hater 64 wrote: Tue Oct 28, 2025 4:11 pm
Nug Wrangler wrote: Fri Oct 24, 2025 3:48 pm Selene perhaps? Selene is the goddess of the moon in Greek mythology
Too late! <span class="skimlinks-unlinked">viewtopic.php?t=624692</span>
Ah, well.
Oof, naming things is difficult :lol: :lol:
The idea was to name this synth and the upcoming commercial one after moons in our solar system, so I'm considering Deimos as an alternative, since that's a rather small moon.
We'll see ..
Deimos is a good name :)
FL Studio 25 | AudioThing JULY - Deimos - U-he Filterscape - NI Kontour - Softube Model 80 - LUSH-2 - UAD Opal - WaveOSC

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How to open the sequencer ?

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akira2 wrote: Fri Oct 31, 2025 11:22 pm How to open the sequencer ?
You go to voices/aux and right click the number 1. Then right click on the black square to open it, another click shut it down.
.
There's three "phase" squares that you also can right click. That opens settings for waveforms.

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thanks !

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Nine more Luna presets.
That's it. Now i can only come up with weird ones that's more FX than tones that can be used for music. However i let the wtf_preset through.
Lunewpre.zip
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Last edited by Saffran on Sat Nov 01, 2025 7:14 pm, edited 1 time in total.

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Possible bug.
I'm not a pro on synth settings so i wonder if i missed something?
The oscillator 2 seems to not work. There's no blue number or red phase wave. No impact on the sound.

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Diana (Latin equivalent of Selene)?

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a 'Lunula'
is a crescent moon shaped pendant
-if you like that one
Deimos is fine imo
I wonder what I want in here
-my site is gone and music a mess

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I'm on board with Deimos. Only, instead of this Oberheim-style blue theme, I guess I'd like a green one that looks like it's from a really old sword, or a red one with stuff like pentagrams and horns...
I hate signatures too.

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Saffran wrote: Sat Nov 01, 2025 7:06 pm Possible bug.
I'm not a pro on synth settings so i wonder if i missed something?
The oscillator 2 seems to not work. There's no blue number or red phase wave. No impact on the sound.
Perhaps you forgot to turn oscillator 2 on? It's not super obvious (without a manual or so) but there's buttons to toggle the oscillators and noise on and off in the mixer section, just below their volume knobs.

Any module on the synth will only get red indicators shown if it is being used somewhere.

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@Tom Trnk:
Shouldn't 'Slop' on the filter and probably also on the oscillator be 'Slope'?
When I wondered what 'Slop' should mean (I'm not native English speaking), I tried to get help from Google via search term 'Slope vs Slop' and the AI came up with the following:
"Slope" refers to an incline or slant, either a physical surface like a hill or the mathematical concept of steepness, while "slop" refers to spilled liquid or messy, semi-liquid waste, such as kitchen scraps. They are not interchangeable and have entirely different meanings.
Slope meaning: A surface with a natural incline, like a hill, or the measure of a line's steepness (rise over run).
Slop meaning: Spilled liquid or messy, semi-liquid waste.
Slope example: "The house is built on a steep slope" or "The slope of the line is 2/3".
Slop example: "Don't spill the food slop on the floor" or "The pigs are being fed slop".

On other places in Luna it's called 'Slope'...

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ZonderP wrote: Mon Nov 03, 2025 10:27 pm When I wondered what 'Slop' should mean (I'm not native English speaking) ...
When talking about electronics, especially for music, "slop" is short for "sloppiness." You might also call it inaccuracy, wiggle room, or drift tolerance, but "slop" is pretty standard jargon here. A slop knob on a synthesizer commonly controls how "analog" it sounds, by allowing (for example) multiple oscillators and filters to be slightly detuned from each other.

I unfortunately can't double check right now whether that's what the slop control in Luna is doing.
I hate signatures too.

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