MATRIXSYNTH: Stochastic Instruments

Showing posts with label Stochastic Instruments. Show all posts
Showing posts with label Stochastic Instruments. Show all posts

Wednesday, November 01, 2023

This module makes infinite music | Stochastic Inspiration Generator Demo

video upload by mylarmelodies

"Being a demo of a unique and inspiring 4-part generative eurorack modular sequencer, the Stochastic Instruments SIG+."

00:00 Hello.
00:23 Choosing Notes & Probability
02:28 Choosing Octaves
03:25 Looping
04:47 Looping Tricks
08:09 Force Barline
10:24 Linearity
11:25 Repeats
12:24 Ascend/Descend
14:52 Ratcheting
15:59 TrEG Attack/Decay
18:13 A pause for thought
19:32 Making a multimbral Orchestra!
23:13 Ambient Outro

Saturday, February 25, 2023

Eurorack Waveshaping VCOs

video upload by John Schussler

"Several interesting new VCOs have been released over the past 6 months or so, and just recently the one I was waiting on, Legion from WMD, arrived.

So now seems like a good time to look at this batch of VCOs that all have a similar add-on feature: waveshaping. They don't all do it the same way, and all have very different sounds, but in my head they're sortof a category from which I probably only need one or two.

We'll see.

Sequence from Stochastic IG, envelope from Zadar.

00:00 Intro
00:20 Pony VCO
06:08 Virt Iter Legio
12:15 Pizza
19:58 Legion"

Monday, February 20, 2023

Stoicism //SIG+/XPO/QPAS/Mimeophon//

video upload by Aleatoric Machine

"A self-playing Eurorack modular synthesizer patch featuring Make Noise’s XPO, QPAS & Mimeophon, and Stochastic Instruments’ Stochastic Inspiration Generator (SIG+). Plus many more modules described below.

Everything you hear in this is coming from a single monophonic sequence from the SIG+ and a single Make Noise XPO. I’m pretty amazed by how much variety of tone and texture can come from this single oscillator, all at the same time. The different waveform outputs are each running through their own VCAs, filters, triggers, and effects, but the melodic content is all the same. I’ll go through the sequencing in a minute, but first I’m going to focus on the audio signal paths.

Overall, the XPO’s L & R modulation are controlled by a triangle LFO coming from Acid Rain’s Maestro.

The first output is the stereo square wave, which goes through QPAS and Mimeophon, then into the mixer. QPAS’s L & R rotation and Q are modulated by two different smooth random waves from ALM’s Pamela’s Pro Workout. Mimeophon’s repeats are modulated by a smooth random wave coming from Maestro. This voice is triggered by a bouncing ball coming from Make Noise’s Maths.

The second output is the mono triangle wave, which first goes through an Intellijel 1U VCA, then uses Intellijel’s 1U pedal I/O to go through a Chase Bliss Mood (repeats tuned up a 5th) and Chase Bliss Dark World, then into the mixer. This voice is triggered by another bouncing ball from another Maths.

The third output is the mono sawtooth wave, which goes through channel one of a Make Noise ModDemix, an Intellijel Morgasmatron (with panning controlled by separate LFOs going to the L & R FM1 inputs - LFO 1 coming from Mutable Instruments’ Tides and LFO 2 coming from Intellijel’s Rubicon 2), then a Happy Nerding FX Aid XL running a flanger algorithm, then into the mixer. This voice is triggered by a repetitive Euclidian rhythm coming from Acid Rain Constellation and Doepfer Dual ADSR.

The last output is the spike wave going through channel two of the ModDemix, a Doepfer Multimode VCF, and Strymon’s Magneto in shift mode, then into the mixer. Magneto’s repeats are modulated by another smooth random wave coming from Maestro. This voice is triggered by a slower Euclidean rhythm coming from Constellation and Make Noise’s Contour.

Each voice goes into Doepfer’s VC Stereo Mixer, which has a built in VCA on each channel. The level of each voice is independently controlled by a separate smooth random wave from Pam, so the mix is constantly evolving. The voltages coming from Pam are further slewed by Mutable Instruments’ Stages, since the smooth random wave from Pam can still have some sharp edges. Then the whole mix goes through a 2HP Verb, with the reverb mix modulated by another smooth random wave from Pam, and finally through Endorphines’ Golden Master, which connects directly to the Intellijel 7U Performance Case’s built in audio outputs.

Now for the melodic content and harmonic structure. This is all driven by Stochastic Instruments’ Stochastic Inspiration Generator (my first patch with it!). This is an incredible module. I won’t go into everything it does, as there are already a couple very helpful videos out there on that, but suffice it to say that it lives up to its name! I’m using multiple channels, each with its own tonality, then cycling through those via an ALM Boss Bow Two switch to determine which channel will control the v/oct pitch of the XPO. The Boss Bow’s channel is control by a sequence coming from another Stages. Channel one is just a low C, to establish the primary key. Channel two randomly selects pitches from a C major chord, with low C in the bass. Channel three selects pitches from an F minor chord, with an occasional 2nd and 4th and a low F in the bass. Channel 4 selects pitches from a D flat major chord, with an occasional 6th and a low D flat in the bass.

I’m not sure if this is indeterminate enough to be considered generative, since the harmonic content is fairly structured, even if the melody, rhythm, and balance of the parts are all random. It’s more, well, aleatoric. I hope you enjoy it (although I realize than if you are into this sort of thing, you are born of a special breed!)."

Friday, January 13, 2023

Eurorack low pass gates - session 5 (ish)

video upload by John Schussler

Note this is the first post to feature BeepBoop.

"I can't stop collecting low pass gates. There's GAS, and then there's LPG GAS. Don't know what the deal is there.

Here's the latest batch. Most of them are small and passive, but some are bigger and powered and covered in knobs and sliders and stuff. So it's really a sound comparison, not a full module comparison.

Sound source: Befaco Pony square wave. Sequencer: Stochastic IG.
No envelopes, just gates out of the SIG.

00:00 Intro
00:20 Agogo
00:48 BeepBoop v1
02:32 BeepBoop v2
04:05 kNoB
05:18 Abyss
06:49 Herzlich
09:29 EAR
12:38 SSF
16:16 Rabid Elephant
19:11 EAR plus attenuator
20:57 Fast gates w/atten"

Thursday, August 04, 2022

Abyss Devices - Tube distortions compared

video upload by John Schussler

"Abyss Devices makes a couple different tube-based distortions. The Saevitum is bigger, with a resonant LP/HP filter attached, and Saevicus is smaller with no (resonant) filter. Both use 12AX7 tubes and similar amp circuitry, so I was interested to see where their sounds differed or were the same.

Since the Saevicus doesn't have a resonant filter (it has as filter, but it serves mostly as a simple tone control), I focused on the distortion sounds from each module, with my main question being whether the smaller Saevicus was missing anything in that department, or whether it was just as growly as its big brother.

Input audio was a basic saw wave from a Doepfer A-111. Sequenced by Stochastic IG. Envelope by Zadar.

00:00 Intro
00:20 Basics
03:00 Feedback
04:41 Saevitum filter
08:40 Saevitus gain
11:56 Saevitum filter"

Friday, March 04, 2022

Stochastic Inspiration Generator SIG and Prepared Piano

video upload by Friendly Noise

"Using the Befaco voltage to midi converter VCMC and Stochastic I struments SIG to play a VST piano plugin within the DAW. Some details included in the video.

Modules: Befaco VCMC, Stochastic Instruments SIG Stochastic Inspiration Generator."

Monday, November 29, 2021

“SIG 03 - Meet Chromaphone” by Friendly Noise

video upload by Friendly Noise

"The amazing Befaco Voltage Controlled Midi Converter (VCMC) allows you to convert analog signals like voltages and gates into midi messages with microscopic detail and programmability. I think that SIG and VCMC can be best friends, because with VCMC you can record the output of SIG as midi data in the DAW of your choice, for later editing, cut and paste, …

Modules: Stochastic Instruments Stochastic Inspiration Generator + Expander, Befaco VCMC.
VST: AAS Chromaphone."

Wednesday, November 17, 2021

Wingie SIG jam

video upload by UncertainMusicCorps

"Little jam session with SIG and Wingie.

SIG triggers are pinging both channels on Wingie. Upper manual is set to Bar mode, lower is set to Poly. SIG clock out is syncing the background drone modulations coming from the 4ms Ensemble Oscillator. Lead voice from Plaits also triggered by SIG."

Tuesday, November 16, 2021

“Stochastic Inspiration Generator 02 - Percussive” by Friendly Noise

video upload by Friendly Noise

"Modules: Stochastic Instruments Stochastic Inspiration Generator + Expander, Schlappi Engineering Angle Grinder, Schlappi Engineering 100 Grit, SSF Vortices, Intellijel Quadrax, Intellijel Planar, Joranalogue Generate 3, Joranalogue Filter 8, Xaoc Kamieniec, Xaoc Tallin, Dave Rossum Panharmonium, Qu-bit Data Bender, Befaco Rampage. + Strymon Nightsky reverb."

Saturday, August 28, 2021

Stochastic Inspiration Generator Demo

video upload by brandon logic

"four melodic voices controlled by the Stochastic Inspiration Generator."


Stochastic Inspiration Generator demo 2

Wednesday, April 07, 2021


video by UncertainMusicCorps

"A duet between MI Marbles and the Stochastic Inspiration Generator (​). Two quite different approaches to achieve generative outcomes.

Marbles pairs with Plaits. SIG controls Disting EX Wavetable oscillator. SWN does drone duties"

The Stochastic Inspiration Generator was first posted here with a blue face panel by Omsonic Lab. This one appears to be re-branded under Stochastic Instruments, which technically makes this the first Stochastic Instruments post.

Info on the module:

"Each event the Stochastic Inspiration Generator creates has its pitch, octave, duration, onset, offset, portamento and ratchet set by probability controls. You can exert as much or as little control over what the next event will be as you wish. This could be very simple (e.g. raise C, E, G and 1/16 to 100% and you have a random arpeggiator kicking out constant 1/16 ) or something much more interesting…

The Inspiration Generator leverages tonal harmony by exploiting its statistical hierarchy of pitches: some notes turn up a lot, some not so much, some not at all. Being ‘in’ C Major means having lots of Cs, quite a lot of Gs and Es, a few Fs, some Ds, As and Bs, but no C#s, D#s, F#s, G#s, A#s. Set the note probabilities accordingly and Stochastic will spontaneously jam in C Major. Shift the probabilities, and you morph the tonality, key or mode they define into new tonal landscapes.

It knows all the musical parameters that shape a line: you can probablise the overall octave range over which it improvises (‘register’) and the octave offsets of each note. Bass notes define harmony and inversion, so you can imply a change of C Root to C 1st Inversion by initially dropping only the Cs by 2 octaves and then swapping to drop only the Es, all in live performance. You can even set the likelihood that melodies will be stepwise or more angular. It also knows about rhythm: you can set the likelihood that each subsequent note will be any value from an 8 bar drone to constant 1/16 pulses. And Stochastic can loop: if it suddenly strikes melody gold, hit Loop, define your loop length, release, and it will loop the phrase until you suspend loop. Hit Loop again to return to the saved loop, or hold to overwrite a new one."

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