FM Synth with a twist

[fixstuff555]

I think this synth is a work of art... I'm continually amazed at the simply breathtaking creations made with Flowstone. I come back every now and then to peruse the site to see if it's ever been taken back up (fingers crossed), and I still see jewels like this.. Well done sir.

[k brown]

I appreciate the kind words - thank you.

Not sure what you mean by "...see if it's ever been taken back up (fingers crossed)" - are you referring to 64 bit? I think there's been considerable progress there.

Here's the six-op, multi-algo version I mentioned a few posts back, not a DX7 emu; more like a six-op expansion of the DX27/100, with 14 algorithms. Clicking on the simplified graphic representations on the left selects algorithm (lines between operators change to show algo connections); the DX7 equivalents are displayed at top. Each Carrier has a pan control. Unlike the DX instruments , any combination of operators can have feedback (even Carriers). Operators can choose from four different waveforms. Envelopes can toggle between AHDSR and DADSR.

Skematic6

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Skematic6.fsm

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SkematicGS and SkematicGSx have been updated in their initial posts - improvements to the Amplitude Modulation controls.

[Spogg]

It’s coming on great!

I’ll have a good look when you’ve made a few presets for it.
Looking forward to hearing it in action.

Cheers

Spogg

[k brown]

And a twist on a twist -

Quite by accident I encountered a description online of the core FM synth voice of the Synclavier and it was too tempting an idea not to play with. I always thought of that machine a a sampler; a competitor to the Fairlight; actually the sampling came later, the SC started as a straight synth with a very unique implementation of FM. It's core 'voice' (which was duplicated a few times in a few ways inside the synth) consisted of four Modulator/Carrier pairs in which the Carriers were additive oscillators with 24 partials! Cool! Gotta try it right? So I adapted the toolbox additive osc to produce 24 harmonics and with larger 'sliders'.

One of the main things missing from the core Synclavier FM/Additive 'voice' is that it had FM amount control for each of the 24 harmonics individually (and their phases adjusted invidually) - I imagine that to do that with FS would require 24 separate sine oscs per Carrier, no?

Has Martin or anyone ever done a lower-aliasing wavetable oscillator than the stock one used in this additive osc?

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SkematicSC.fsm

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Same presets as ...GS and ...GSx with the Carriers set to sine, plus a few simple additive demo presets. This opens up enormous possibilities; one can get a pretty decent electric piano with just a single additive osc with no FM at all!

[k brown]

Updated schematic above with save/load for the additive waves.

Here are the presets so far, and a couple of .txt files with basic waveshapes (plus an EP approximation) to load into the add-oscs.

SkematicSC presets_addWaves.zip

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P.S.: A bit of an apology to Spogg - I just realized this (and much more) was already done on his Quilcom 4EA+!

[k brown]

Here are all the Skematic... synths in a single Zip -

Skematic_all.zip

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including a new one - SkematicWS :

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which is similar to SkematicSP (which uses Martin's Spread Partials osc), but uses the Spread Partials' predecessor, Martin's WaveShape osc, which seamlessly morphs sine to a saw-like shape. SkematicWS has two of these per 'osc' so can produce pulse waves also and has a Saw/Pulse crossfader. Though the SP osc can also produce this saw-like shape, it has no phase input, so can't do pulse and can't do 'FM' (phase modulation). With SkematicWS, osc 1 can FM 2, 2 can FM 3 and 3 can FM 4. Includes a few simple 'demo' style presets.

[Halon]

Wonderful stuff mr. Brown!

[k brown]

Thanks, hope one or more are of some use.

[Halon]

Thanks, hope one or more are of some use.

All of them are