chaos oscillator

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i'll contest that last statement :) i remember the inception of warhammer/wh40k and the publication of cosmic trigger, read some elric, rolled some polyhedrons, and have a sort of inverse star of chaos tattoo jotted from my idle youthful moments at arcosanti. my understanding is that "chaos" is about the threshold concerning what we deign to keep track of and what we do not, what is within our consideration of "predictable", which is really relative. i do not like to spin any unnecessary mystique about the subject and prefer to say "procedural" really :)

i think we agree in our thesis.. my journey through cheese erm i mean audio dsp has involved the sort of monolithic references envaluating What We Do and What We Do Not Do. "we" basically don't do, or, mostly haven't done to date, anything that doesn't lend itself easily to antialiasing. clever methods like DSF are What We Want.

the result is that We have barely begun to simply *do things with numbers* because people want brilliance like 100+ pages for a filter by andrew simper. fair enough, reasonable. but we're not *doing things* because (vitd) "if only the brightest birds sang in the forest".

to contrast,
http://xoxos.net/temp/black1.mp3

i've mucked around with 3d forms for a bit and generally found them to be either too noisy or not noisy enough. mostly due to my limited thinking and approach. putting newer ideas together, the above.. many simple "3d rotation" arrangements will produce, say 9 partials in odd, mirrored arrangements. not worth publishing. and of limited benefit, eg. generally, the way i've done things at least, doesn't produce anything wildly dissimilar to 3 or 4 op FM.

i'm liking the example linked above, because it does produce a wide range of timbres (two rate params, two angles, a few scalars). the audio example is with constant frequency components, only modulating angles and scalars. it sounds like FM, pretty much. most things seem to.. and, it's already complex enough to be less than meaningful and intuitive. this arrangement is a little better than some, but i'm calling it "black" because it's hardly worth relating the very arbitrary form inside.

going with what i began the post with, if simple minded, ignorant people who don't care about AA practiced dsp more, there would be some really wild developments (check out my history of "physical models.."). maybe we can get there now that computers are faster and oversampling isn't such an issue. but the mystique we weave around audio dsp to sell it, is not constructive to our synergetic potential as a culture, by excluding so many willing participants.

also for developers, something i saw earlier today. had another dig around and encountered more caches of attractors (halvorsen, hadley, thomas.. "nose hoover" what a name) and this pdf which i haven't digested about a sort of intersecting rossler form -
http://www2.gsu.edu/~matals/lp/lp_paper ... ocus_s.pdf
you come and go, you come and go. amitabha neither a follower nor a leader be tagore "where roads are made i lose my way" where there is certainty, consideration is absent.

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there you go


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Looks like this 'chaos' could be more perceivable if it was used as a LFO instead. In HFO it just sounds like a complex noise or some kind of restless FM oscillator. Might be used as a complex detuning pattern for unison oscillators, who knows.
~stratum~

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thanks for the perspective(s).. the base osc is a reasonable ~2.6% cpu here, i added feedback which doubles that and basically results in noisy hysteresis. i thought the oscillator was kind of tame without it, but listening to it fresh, it does sound "enough". there are a few pops from an uncapped param. it's my idea of pad material. time to take a break have a think and build this evening.

next i have to talk myself out of doing any more chaos oscs and work on something else or i'll never get anything done :hihi:
you come and go, you come and go. amitabha neither a follower nor a leader be tagore "where roads are made i lose my way" where there is certainty, consideration is absent.

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This is wild. I love how single held notes in Cazimi can slowly become rougher and noisier when modulating with the granular oscillator, but this thing gets you that effect so easily and sounds super powerful and in-your-face while doing it. One of my favourite sounds.

Thank you!

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http://www.ageofthewheel.com/2011/03/eu ... ce-in.html

Let these MIDI files trigger Chaos. Even one instance. Or try two instances with two different MIDI files.
Find the sweet spot in the Chaos so that multiple frequencies may occur , and multiple chaotic "internal events".

Modify the release. (and filters and lfo speeds) very slow lfos are particularly nice. EDIT>Addionally play and modify a sustaining single note in one randomly chosen instance of Chaos. That pretty much will do it-radically changing the sounds from the MIDI triggered stuff.

Layer with Oscine tract or Friction played by another MIDI from the euclidean collection, employing the "find a sweet spot technique"

Layer all that with a patch from (well any deeply programmed drone patch) another synth.

Performance of a piece just by modifying parameters on the fly sounds as good or better than many eurorack and modular stuff I've heard in recent demos. At this point ramping the "noise" component can be quite rewarding when turning up "MOD". Acts as kind of a climax.
Last edited by newuser2014 on Fri Feb 03, 2017 12:08 pm, edited 3 times in total.
Falcon user since 2015

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http://xoxos.net/temp/black3.mp3

grouped feedback in a 3d structure.. i'm moving the cutoff of the lowpass on the feedback and letting it sit there.. a wider scale of chaotic dynamism is exhibited, like octaves of perlin noise, as modulation seems to occur on multiple scales from static parameterisation. also exhibited as an envelope function as regimes settle in at higher frequencies.

it's nice when the ventured model has appreciable function :) this one definately gets a standard filter on the output as well.
you come and go, you come and go. amitabha neither a follower nor a leader be tagore "where roads are made i lose my way" where there is certainty, consideration is absent.

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@xoxos, great little synth. Very interesting. Dont know if this has been mentioned already but the synth does not work properly in FL studio. I can press the piano roll Keys and get sound, but when I enter a note and press play, I only get a small clicking sound. Tested in FL 11 & 12.

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couldn't tell you. is the sequencer sending velocity 0 ?? (one of the two new vst this post concerns uses a different midi resource, if one works and one does not).

look it's black.

took me longer to fancy this up than expected. no patching to speak of.

without patches or a manual, it's kind of a black box. there's no point in gushing, it looks like this one is a deep, deep, very deep. oh oh oh. i normally do not say that.

expect really, really crazy sounds. i think the second and third presets, you might as well have a conversation with them.

Image
http://xoxos.net/temp/blackout.zip

there are two synths in the zip:

"out" is the oscillator from the "beautiful era" thread in the dsp forum. it's a boring implementation, a few patches toying with snare drum sounds. for oscillator geekery. it's a boring synth i will use to make boring clarinet sounds.

"black" is a 3d oscillator of arbitrary form. three rotations, two angles, two scalars and a transposition. i then extended the "out" normalisation method into 3d, then the "chaos" osc feedback and this.. thing.. was created. it was hard to stop using it to finish building it.

basically.. in 3d space, a second osc is piggybacked onto the fundamental as a helix ring or torus, increase "radius" and the torus grows into a sphere (high values add an octave up as the torus radius extends past the center, if you see why). two angles tilt the result onto an arbitrary plane, where it is rotated by a third frequency, squished by the "scale" function, translated by the "bias" funtion, then de-rotated and de-tilted. the selection of oscillator modes 1-7 change the order of these operations. just chucking on creative options.

but you don't want to think about that.

when the sun rises and you are still patching,
you come and go, you come and go. amitabha neither a follower nor a leader be tagore "where roads are made i lose my way" where there is certainty, consideration is absent.

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Really cool and fascinating stuff, thanks! I do wish it was 64bit though. :oops:

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Image
the netbook. this year i've been attempting to retain family heirlooms, when i can afford the $40 for another used netbook, i'll get a backup ;) (dreams of a platform where all the keys work) xoxos 64 bit is probably going to require (begin kirk voice) some.. sort.. of.. meaningful... public.. acknowledgement....
you come and go, you come and go. amitabha neither a follower nor a leader be tagore "where roads are made i lose my way" where there is certainty, consideration is absent.

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sadly there is some component of the filter working nondeterminalistically i haven't been able to determine which is apparent on gate sync, so high resonance feedback doesn't recall the same event. switching between a few octaves on gate sync with resonance on full is different than triggering the same pitch. all storage states for the filters are zeroed on sync so have introduced a bug somewhere in that filter code.
you come and go, you come and go. amitabha neither a follower nor a leader be tagore "where roads are made i lose my way" where there is certainty, consideration is absent.

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i don't know how i fixed it but it gate sync seems to be working for precise recall now :)

same link
http://xoxos.net/temp/blackout.zip

my full endorsement for this synth plugin.
you come and go, you come and go. amitabha neither a follower nor a leader be tagore "where roads are made i lose my way" where there is certainty, consideration is absent.

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:D

also for outer, please reacquire -
http://xoxos.net/vst/outer.zip

i realised that i had not included the filter states in reset for outer. it was less noticeable due to the simpler form, now it recalls precisely as well.

i always say i'm going to hit stuff again, but over the years i always move on to the next project.. hopefully i'll publish these with better presets at some point (my stereo monitoring isn't set up at the moment), but i think the architecture is complete. especially in black some of the "osc modes" are really arbitrary, more exploration could be done.. and truthfully, the same parameterisation could be used for lots of similar but different ideas for geometric synthesis. but i need to take a break, they work properly now, and i'm thinking about another thing for when i code again. i figure you'll find good patches if you want :)
you come and go, you come and go. amitabha neither a follower nor a leader be tagore "where roads are made i lose my way" where there is certainty, consideration is absent.

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I'll give it a go later on. Thanks for uploading. :)
This is the same method MJ used when he was working on Anthony Marinelli's Thriller.

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