Do you have a Minilogue XD? I rather like the built in phase modulation already, but Sinevibes is putting out a user oscillator with a 4-OP FM engine.

Between that and the Model:Cycles I got myself for christmas I think 2021 is going to be a rich in bessel functions and harmonic side bands!

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the new Fors m4l synth from ess (fm+wavetable) sounds very interesting

@RPLKTR wow, thank you for that response. i have heard and been interested in pcm synthesis based off of some comments made in the daydream sound youtuber’s esoniq reviews but digital wavetable synthesis may be more what im looking for. i assume this is the same type of thing that serum and hydrasynth use. *edit: after reading the wiki atricle, it seems like its something else.*i think where i get frustrated with the digitone, even though i love it overall, is that it does feel like if i were able to change the operator to an importable wavetable, or even substitute it with the external input, then have a slightly more complex eg, potentially a few more routing options, it could be much more flexible. i do understand the limitations and they did a good job of keeping it extremely musical.

since that comment, i did grab an Analog Four. I was initially attempting to use linear fm in my small eurorack setup and that did give me cool results but i think i maybe didnt have quite the right types of vcos with fm capabilities for what i was doing (something like the instruo vcos modules with complex fm inputs and cv control/wavefolding). Now, A4 does have external ins, the 2 vcos can be frequency modulated and amplitude modulated, so i could theoretically get closer to bringing in my own unique oscillators (even digitone oscillators) to use as operators. but i may be even more limited now because t̶h̶e̶ ̶e̶n̶v̶e̶l̶o̶p̶e̶s̶ ̶a̶r̶e̶n̶’̶t̶ ̶r̶e̶a̶l̶l̶y̶ ̶a̶ ̶f̶a̶c̶t̶o̶r̶ ̶i̶n̶ ̶t̶h̶e̶ ̶s̶i̶g̶n̶a̶l̶ ̶c̶h̶a̶i̶n̶ ̶b̶e̶t̶w̶e̶e̶n̶ ̶t̶h̶e̶ ̶m̶o̶d̶u̶l̶a̶t̶o̶r̶ ̶a̶n̶d̶ ̶c̶a̶r̶r̶i̶e̶r̶,̶ ̶a̶s̶ ̶f̶a̶r̶ ̶a̶s̶ ̶i̶ ̶u̶n̶d̶e̶r̶s̶t̶a̶n̶d̶.but i do have the A4 audio going into both inputs of the Digitone, which goes into two inputs and a thru track of the Octatrack. So i have all 3 (very different) chorus effects from the 3 machines (and phaser/flangers/reverb/delays, the latter 2 of which are unique to the machine), and i assume i can create some sort of feedback by either cue-ing audio out from the octa and into the A4’s ext in or running it straight out of the digi and into the A4.

im guessing, and i may try mocking this up in vcv rack, that if you were to use the DHE segmented envelope modules (https://library.vcvrack.com/DHE-Modules) on the more complex modulator vcos or maybe mutable stages in a real modular environment, and use multiple instances of that that feed back into themselves, you could get some more complex results. im sure this is even more easy in max or pd, but i don’t understand those well enough to try that yet. maybe with automatism. i do wonder if there are any really good examples of someone using analog fm to make otherwordly textures. one video that really grabbed my attention was divkid’s Tona demo. that seemed to have a really nice timbre as far as fm goes in general. or this one around 4:50
https://www.youtube.com/watch?v=OLMFAW3CJDM&ab_channel=DivKidVideo

the minilogue engine does sound very nice. i was not aware that the nts-1 was the same engine as the xd. will definitely have to look into that. i guess by “an alternative to field recording”, i just meant replicating textures that are found in nature. or even ones that arent. every texture i make in my previous fm synths has still had a very digital fm sound, so i think i do agree that physical modelling synthesis is probably what i’m after. i have almost zero understanding of fft, phase synthesis, formant synthesis , markov chains, pulsar synthesis,

as far as hardware synths, the opsix does look really flexible and deep for sound design. im sure i would love that. it sounds a lot like the volca fm in the demos, which i really enjoyed. I am curious about it’s ability to do less musical timbres/textures. thank you for the response and recommendations. i am just now seeing this response for some reason, so sorry about the delay. i have never used sculpture and never even heard of flow motion. ableton’s operator is pretty complex in that it uses subtractive techniques, you have more control over the individual components of the algorithm, you can add harmonics to the frequency spectrum, and you can use more than just sine waves. it does seem like maybe the highest level of experimentation is going to require software of some sort

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and Felisha Ledesma of S1.

Fors is great!

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yes, i always confuse her with felicia atkinson but i am a big fan of both. some relation to jefre cantu, right?

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And it looks like there’s new stuff: https://www.instagram.com/p/CJW5oYThl6Q/?igshid=16g4dsgqhx9am

They absolutely are. In the famous e-piano sounds, it’s the short modulation by a high-rate sine that gives it the clink sound on attack, making the entire patch sound glassy. That clink is achieved by the modulator’s EG having a very short attack and quite short decay/release (no sustain). Change the EG rates and the sound morphs entirely.

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Can attest that the new synth & delay (Doublet / Bokeh) are fantastic, as is the first synth and sequencer. Love what these two are making - highly recommended.

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Does A4 allow for anything to be done with external audio other that FX processing?

i had no idea that the e-piano sounds even existed. that’s exactly what im looking for. those are the very first sounds i tried to make. got close with audio rate lfos (synced to osc rate) modulating the freq mod and some other params . gonna have to google this immediately. thanks again. that does make sense, i guess you can also take any of the individual outs through the external in and the envelopes from the ext tracks would obviously be a factor anyway. Where did you see this? is there an elektronauts thread or something? i would like to find clarification on amplitude modulation and envelopes. i assume if you am the level of one with two, then two’s envelope is in between 2 and 1. but when you fm an osc with an lfo, i think the only way to envelope the mod is by running the lfo out of one of the outputs or cv outs(?) and then using “IN L/R” and AM’ing the other oscillator with the envelope for the input osc. maybe the fade envelope per lfo could be used as a snappy eg

@kveye
i’m not 100% on that, as evidenced by my misunderstanding above. but let me check. i have tried running my rollz/spikering bp output into it and it was cool. i think it at least can be used to sync and am/fm the other oscillator. you can run it through all of the filter types at once by creating neighbor tracks like a filter bank and using a bp, highpass, lp, peak, bandreject on each track. you can pulse width modulate the external signal and the envelopes apply to it. its an oscillator type option. it goes like tri/pulse/saw/pulse-saw/in L/in R/feedback/neighbor

*EDIT: this is what the manual says:

  • IN L Uses the audio coming from the left external input as the audio source instead of the oscillator
    waveforms. The incoming audio can then be affcted by the AM, the fiters, the overdrive and the
    amplitude envelope of the track.
  • IN R Equivalent to IN L, but using the right external input

***the coolest thing is that you can use an external audio signal to AM or FM the 2nd oscillator

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Sorry, I wasn’t talking about A4 in particular but about FM in general since you were talking about operators, carriers, and modulators.

I don’t think those terms apply to the A4 since its signal path isn’t really compatible with the Yamaha-style terms of operator (one osc + one envelope) and algorithm (arbitrary phase modulation between operators, and down-mixing of parallel operators).

You’re right that while A4 sports 8 oscillators, the envelope position in the signal chain will make it hard to do any Yamaha-style FM sound design with it. Look at the architecture diagram in the manual. Maybe you can creatively use the filter envelope somehow? Hard to say, I have no experience with this particular device.

What will be an additional complication is the available waveforms. For complex FM harmonically rich waveforms quickly get unwieldy. In the A4 you have a filter which you could use to clean that up, and there’s a triangle waveform, too.

But I keep wondering why you’d get the A4 and not the Digitone or Model:Cycles if you’re after FM?

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i have all 3 :wink: im just looking for many forms of fm. i am actually really liking sound design on the A4. it fills the gaps that i felt i was missing in the digitone. both are really great synths. there are actually a lot of crazy routing and modulations with the analog four. i just got it like a week ago so im still scratching the surface but already getting mind blowing wet buzzy syrupy twisty sounds out of it. crazy deep and fat. also eyeballing the opsix. i wanted to mention i do love pianoteq. one of my top favorite plugins of all time. i would enjoy a physical modelling synth i think. something like the crazy expensive one that stimming has in his most recent ama video & i think also the telekom feature about the future of synthesis

as for the cycles, its great too but nowhere near the sound design capabilities of the dn or the a4 obviously. i just really love the workflow, knob perfunction, the live performance options, ultra fast realtime beatmaking/pattern building on-the-fly. and i get some of the best clicky plasticine fm style percussion sounds i’ve ever heard. and i’ve tried a lot of different routes for that type of sound. cycles is perfect for that. just for the record

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A rather mysterious figure in my mind, but Fors is pretty amazing so I am assuming she is responsible for half of that.

There is always an elektronauts thread

The A4 has versatile LFO settings. I think you can set an LFO fixed pitch (as opposed to a multiple of the BPM) and follow keyboard (I know, now it isn’t fixed :stuck_out_tongue: ), which turns the LFO into another oscillator. Then you can use the LFO fade out to mimic the modulator envelope. That’s what I can gleen anyways, I keep telling myself I don’t need an A4.

Here’s a jam I made with my FM elektron boxes :slight_smile:

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absolutely. truest statement i’ve ever heard and i always forget about that forum.thanks for the link.

that’s a beautiful track. nice work. big fan of the model:cycles too. an yeah you’re right, along with am and osc sync, using the audio rate (tuning fork) lfos (they are tied to the rate of the oscillator i believe so yeah fixed would be following keyboard pitch but you can disable track obviously) is the best way to do frequency modulation. you can set it to either oscillator’s pitch mod or freq mod (not sure of the difference there yet, maybe “fine”?) but there is definitely a difference in result. the lfo fade is incredibly useful as an envelope and just the variation you get from using different fm destinations, lfo shapes (including feedback and external audio), different osc sync shapes and pulse widths, different frequency settings on both mod and carrier makes it seem like unlimited shaping potential

i recently (2 days ago) finally got a good grasp on am/oscillator sync and fm on the a4 and i am 100% in love with it. i have never gotten better liquid textures and just musically useful analog sounds in general than i can now. i’ve made like 20 patches that i love so much in the last two days. it’s unbelievable. highly recommended for analog fm experimentation.

actually, elektronauts was part of this revelation. so yeah i’ll have to keep that in mind as a resource aside from this forum of course

here are some resources i stumbled upon in case anyone else is interested in Analog Four specific fm/am sound design:

Elektron Analog Four tutorial Oscillator Sync

Elektron Analog Four tutorial Amplitude Modulation

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pitch is logarithmic (or exponential depending on your framework) and frequency is linear. These produce different sidebands, but generally linear is considered more musical.

Thavius Beck always makes awesome videos. FM+sync is my favorite way to make interesting waveforms with analog oscillators. There are so many sweet spots and so many ways to modulate the timbre.

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Along those lines – one small thing I recently discovered is that although linear (& especially linear thru zero) is usually what you want for FM sounds, exponential FM is fun for percussive stuff due to its unruly nature. This is why patching modulation to an oscillator’s v/oct (or to filter cutoff) can make good drum sounds!

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Hi everybody, this is my first time posting here after quite a lot of reading, this looks like a really nice community and this thread in particular gave me a lot of ideas, inspiration, thanks !
I wanted to share with you an attempt at a FM synth I made in Reaktor, I haven’t uploaded it to the user library yet as I fear it is not ready / not that “good”. (it is my first time building in Reaktor…)
You can find it here : Dream Phase Machine 4OP V2.ens (8.9 MB)

My idea was to make a simple 4 OP “PM” synth, with a mod matrix, and envelopes for each mod index (feedback included that is 4 envelopes per OP, plus one for the OP’s DCA), so that you could program interesting evolving textures with only few OP. I also added a time modulated delay (by a simple LFO) in each OP, in the path of the “modulator out”, so you don’t hear it directly, only the effect it has on the carrier it modulates. It makes for all kind of comb filtering related crest and valleys in the modulation with short times and kind of almost reverb-ish space with some feedback, I find it interesting too.

Well if anyone has time and will to check it, and has feedback (ha!) I would be honored.

Have a good day !

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Looking for tips on creating FM bell sounds (dx7-ish) in eurorack/vcv. I’ve been doing some reading up, and can’t quite produce anything I like. Examples greatly appreciated!!

I have found this illustrated supplement to the rubicon pretty helpful in making bells and learning how to make FM in modular. It may or may not be helpful depending on how similar your set-up is/can be to Rubicon/Dixie combo. The basic Idea is to send the same pitch cv to both oscillators, pitch the modulator up an octave or two from the carrier (or experiment), then send a dynamically varying amount of the modulator to the fm input of the carrier (using a vca and env) and also send the output of the carrier to a dynamically varied vca/lpg/env. You can use the same envelope for both vcas or different shapes.

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Thanks! That looks like an excellent resource. The patch you described is what I’m trying to build up in VCV rack, I feel like I’m getting closer. 1 Carrier osc, and two modulators mixed together, vcas + ega for each operator. Def bell-ish but still a bit off

FWIW, I have found that the part that really helps the “bell” emerge with the rubicon is playing with the symmetry of the carrier. I’m not sure if there is a vco you have access to that would let you play with offseting the wave. it Doesn’t look like that VCO does.

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