Tag: humbleAudio

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Day 3 – Sailing Through The Clouds

The first night at sea was as eery as I can remember seeing on the water. Like a scene from a dreamworld that was real, but didn’t always seem like it. Like we were traveling between realms. I won’t claim to be some long travelled seafarer, but, having grown up by the ocean, I’ve spent a good amount of time on the water in my life. I’ve been in ocean faring boats on three continents and three oceans from the tropics to the arctic. But one thing I’ve never experienced while on the water is The Marine Layer. I’ve seen fog, even bad fog, but nothing could really prepare me for the enveloping marine layer clouds. It was the kind of dense cloud soup that, in another age, might have been the demise of a ship unable to see any navigation markers whether on the land, sea, or in the sky. The only thing visible in the gloom was the sparkling refraction of the ship’s fog lamps, and the sea rolling off the hull as we slowly made our way through Puget Sound and out to sea. The ship’s fog horns blasting every few minutes, and gentle splashing against the hull 80 or so feet below us, the only things to be heard. The entire experience left a lasting impression.

I spent much of that night and parts of day two scouting the ship for someplace that would be a good spot to whip open a modular synth case later at night. I wanted to be as out of the way as I could, but still in a spot that has adequate electricity to power the synth and a small USB hub connected to my iPad, the Michigan Synth Works XVI, and a small 4-channel headphone amp I bought in a lieu of a passive TRS splitter for using with more than 1 person (I loathe not having individual volume control).. Although I ultimately found a couple of good candidate spots, but this first recording I made during some morning downtime in my cabin before arrival at our first port of call. I wanted to give a full test run of the equipment in my room before lugging it down nine decks, the full width of the ship, and nearly its entire length. The setup is not terribly complicated, but it can be fussy, and I didn’t want to waste time futzing with gear in a communal space.

For this first run of the full use of this synth with all of its accompanying support gear, I wanted to use a familiar patch so as not to become overstimulated if I were to encounter problems with my other gear. I spent the better part of two weeks pouring over a patch with the Addac Systems Addac508 Swell Physics and RYK Algo that I quite enjoyed making, and so decided to go with that same approach using the Humble Audio Quad Operator. The four Swell Physics wave outputs to the four operator VCAs (Gain 1-4) to slowly bring their individual voices in and out with the flow of the ocean. This goes straight to the mixer, operators one and three panned left, with operators two and four panned right, where it’s then sent to a reverb bus using the beautiful Blue Mangoo Stratosphere Cloud Reverb.

Three of the Swell Physics outputs also provided the source for pitch CV used in the second voice. In another bid to patch something familiar, I once again used chaotically generated gates with the NLC Stochaos, alongside Disting Ex’s SD Multisample algorithm, this time using LABS Music Box samples. As in my test patch at home, I again used a tempo modulated Sitka Gravity to have the clock float above and below the base tempo of 72bpm. If I were just a bit smarter, I would have thought to use one of the four wave outputs from Swell Physics rather than a random LFO from Batumi II.

The Toy Piano samples output to the Qu-Bit Electronix Nautilus for some delay and with gradually introduced bit crushing in the feedback path. The delay is set fairly slow, with light modulation to Reversal, Feedback, and Dispersal. In a roughly 50/50 dry/wet mix, the Nautilus outputs go straight to the mixer, and are sent to the reverb bus.

The last portion of the modular is an approximation of the ship’s blaring foghorn. I’m using Plaits in (I think) FM Synthesis mode, using the Doboz T12 touch controller to manually play the note. It’s only used three or four times through the ~7 minute recording.

This patch is the first I can recall making where I’ve used post-production processing rather than playing everything live. This synth is limited, and so is time to create patches. Before I left on the trip I knew that my synth was without one of my staples: a granular processor. Earlier revisions of the case had a Mutable Instruments Beads, but it was eventually lost in favor of something else I can’t remember. I do know that I while I was building the synth I was insistent on several modules having a spot. The Addac Swell Physics, Qu-Bit Nautilus,1 Doboz T12 + 3hp module of choice (I chose the Klavis Tweakers), Expert Sleepers Disting Ex, uO_C, CalSynth Changes (MI Stages), Sitka Gravity, and the Humble Audio Quad Operator were non-negotiable for me, despite a couple of them being large for a case this size. But Beads didn’t make the cut because I found an excellent granular processing plugin for iPad, Fluss, by Hainbach and Bram Bos. It can function as a granular instrument, granular sampler to record and process longer samples, or a live granular processor with a 6 second buffer. Because it’s the behavior that most closely resembles Beads, I’ve only used it in live mode, and I can say that I really like it. Because it’s a live processor Fluss is a good substitute for Beads, and despite being a plugin, it leverages the iPad touch environment well, being a very hands-on, playful interface. Sliders and discs can be flicked around, the effect frozen, manipulation of the three voices, and more are all easily accomplished with touch gestures. Fluss also speaks fluent midi, and can be used with hardware controllers should you want even more manual control.

After recording the modular, I played the recorded file in AUM through an effect bus with Fluss as the plugin, with yet another send from the Fluss output to the Blue Mangoo Stratosphere Cloud Reverb. I mixed the original recording with the granular processing and reverb, and recorded that mix, which is what we have here.

I’ve been using AUM as a final mixer for quite a while with my modular. The way my main synth is set up now, I can’t even listen to it without plugging it into my iPad with AUM. An Expert Sleepers ES-9 is my only output module in that synth. Until recently I’d basically been using it as a very basic mixer. Most of the time it would be a simple stereo input mixed in the synth, primarily via the AI Synthesis 018 Stereo Matrix Mixer, while using one send/return bus to go out to a reverb pedal before final mixing. But as I prepared for this trip, knowing I’d need to use plugins in ways I generally don’t, I started making more intricate mixes, utilizing various sends from several input channels to effects plugins and the output bus. Although I haven’t (yet) recorded multitracks on this trip, AUM is certainly set up to easily to do so. Since I haven’t done much post-processing, I haven’t felt the need to, though that may change as I learn to better leverage a mixed hardware-software environment. I’m not terribly interested in moving in the box, but if a plugin has a touch driven interface that’s playable, like Fluss, there’s no good reason to avoid it since I’m already using AUM as my mixer.

Modules Used:
Addac Systems Addac508 Swell Physics
Humble Audio Quad Operator
Mutable Instruments Plaits
Mutable Instruments Veils
Expert Sleepers Disting Ex (LABS Music Box)
CalSynth uO_C
Nonlinearcircuits Stochaos
Sitka Instruments Gravity
Qu-Bit Electronix Nautilus
Intellijel Amps
Xaoc Devices Batumi II + Poti II
Doboz T12

AUv3 Plugins Used:
Bram Bos / Ruismaker and Hainbach Fluss
Blue Mangoo Stratosphere Cloud Reverb

Modular synth performed and recorded in 1 take in AUM on iPad via the Expert Sleepers ES-9. Granular effects added during post processing in AUM on iPad.

*****

  1. Yes, both the Swell Physics and Nautilus were chosen specifically for their oceanic themes. An early revision of the case also had the Qu-Bit Aurora, which would fit the destination too, but it was substituted out early on during the revision process for something more practical like VCAs or modulation.
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Red Orange Yellow Green: A Synth Test Turned Beautiful

While I was testing a synth I built for my brother and me to play while on a family vacation, I wanted to see if I could get something more ambient from what I perceived as a more rhythmic-oriented case. I have a master clock, a sequencer, a chaotic/random gate producer that likes the time grid, all dedicated to staying in time. My brother is more of a shake your booty type of guy and I wanted to bring something he would enjoy too, so rather than chaos and random ahoy, I put in several modules that he could feel comfortable with too. But rather than resign myself to grid based tempos and rhythms from this synth, I ventured to see how I might go about creating something more freeform. Instruments tends to direct their players towards certain ways of doing things. Modules do the same via their UI cues. All modules demand some particular workflow which lends towards different styles as a result of their design. But this subtle push by module makers doesn’t preclude using their designs in ways that maybe they weren’t designed to be used, or in ways they hadn’t considered. Individual case builds likewise push musicians to patch in certain ways.

Since this was a test, I started with a familiar idea and tried to see how I might create an irregular clock in order to use Stochaos to hit the Disting Ex in the SD Multisample mode using the LABS Soft Piano samples. It’s one of my favorite voice patches, and generally it sounds beautiful. Enter the Sitka Instruments Gravity.

The Gravity is a 6hp, 6 output master clock. It doesn’t have the sorts of clocked modulation options that something like the ALM Busy Circuits Pamela’s Pro Workout has, nor does it have the quick, hands on manipulation of the Make Noise Tempi. But it does have a fair few things going for it. It’s a rock solid clock, and easy to manipulate, even at first glance. The UI is intuitive, and its distractions few. Each output has three modes: Clock, Probability Clock, and Sequencer. The clock and probability clock does what it says. The outputs put out short triggers according to a clocked division or multiplication of the master tempo.1 Timekeeping is not exciting, however it is crucial. But the killer app in the Gravity is that its tempo can be modulated by control voltage, a feature not found in every master clock. At this realization I knew just exactly how I was going to get my wonky clock.

After plugging in a smooth random LFO from Batumi II + Poti II and tuning its frequency and amplitude to taste, we had a modulating clock that randomly floats above and below the master tempo. The Gravity gives a numerical option when the master tempo is being modulated, called Range. It’s simply a number that goes up by tens. Although initially I wasn’t sure just exactly what that number represents, the developer noted that it’s a fixed maximum BPM deviation above and below the set master tempo. So if your tempo is set to 80bpm, for example, with a Range of 10, it will swing as low as 70bpm with -5v of CV, and as high as 90bpm with +5v of CV. Clever. Subtle undulations is one thing. Wild tempo fluctuations is something else altogether, and having a defined maximum range built in to the modulation is a really good way of making it easier. This clock was fantastic, subtly shifting faster and slower. Being anticipated, while not being predictable, and never on a strict grid. Perfect.

Although I didn’t need more triggers than what Gravity can supply to ping the Disting Ex, I did want those triggers to extend laterally, never close to anything we could call a pattern. Stochaos once again provides a beautifully timed spread of triggers which form the basis of the piano voice in the patch. It always takes some clock adjustments to get the triggers just so. In this patch I ultimately used a x8 multiplication of that modulated clock with a 20% chance of skipping a beat to drive Stochaos. This kept triggers coming at a reasonable pace for Stochaos to spread the gates through its various outputs, helped by the retrigger setting in the SD Multisample algorithm to “Synth” to keep it from going too cluttered with notes.

For pitch, I used three of the four Swell Physics outputs into Quantermain (in C major). One of the quantizers was set to quantize to all 7 notes in the scale, with the other two set to quantize only to the root, third, and fifth. This turned out to be a wonderful method of getting pitch. The outputs on Swell Physics are all inter-related, and something akin to phased LFOs, only the phasing is more organic. Swell Physics is not a single speed with waves sliding back and forth, but the movement of the ocean, with ebbs and flows that can’t be strictly controlled, and where each wave affects the others. All of their speeds fluctuate, as do their amplitudes. This set of waves allowed for a good spread of notes, with minimal dissonance.

The Soft Piano sample outputs from Disting go to the Qu-Bit Nautilus for some unclocked delay. Feedback and Depth are lightly modulated by the highly attenuated AVG output from Swell Physics, while a highly attenuated saw ramp LFO from Batumi II + Poti II modulates Reversal. The patch starts with no Chroma (Qu-Bit speak for an effect inserted into the delay feedback path), but heavy distortion is introduced later on as the patch heightens. Using the delay feedback line for distortion, as opposed to using distortion before the delay, still allows for the piano notes to sing through quite clear, before being clipped to hell over and again as the repeats fade away.

After going through Nautilus, the signal made its way to the Make Noise QPAS for some light HP filtering. In most situations I would run a hard clipped signal through a LP filter to shave off some of the most egregious harmonics, but for some reason I preferred the HP filtering in this patch (I tried all four stereo outputs before deciding on HP filter), and so I won’t be too harsh on myself for an intentional decision made in the moment. The only modulation is via the 1 < 2 and 3 > 4 gate outputs on the Swell Physics via the CuteLab Missed Opportunities to both !!¡¡ inputs for some occasional shooting stars.

But getting a pretty flow of random piano notes wasn’t the final goal. The final goal was to test the new elements of this case so I’d have a basic understanding of how to use the case in a style I enjoy, and hopefully avoid having to constantly dig through manuals during the little time I’d have to patch on the trip, which brings me to a real beast of a module: the new Doboz T12, a 17hp (😕) touch controller, arpeggiator, and sequencer. I had half-assedly tried to get it going a couple of times over the last couple of weeks, but came up empty both times, so it was time to sit down with the manual and dig in.

At first I was intimidated by the T12. There’s not much on the panel outside of 12 touch plates, a screen, a couple of buttons, and an encoder to give you cues, and the options in the screen are many. But once I got over the initial hurdle of Step 1, the intuitive nature of the screen UI took over, which makes it generally simple to navigate and use. The T12 has 4 modes: a touch controller, an arpeggiator, a very straightforward up-to-32 step sequencer, and a more complex extended functionality step sequencer. Although I certainly want to understand the Complex Sequencer, my aim was to tackle the touch controller (why I initially bought the T12 to begin with), the arpeggiator, and the simple step sequencer.

Despite being a bit overwhelming at first glance, having loads of options in the UI, the T12 workflow is both fast and intuitive. Not only are there the standard pitch CV and gate outputs, but also a secondary CV output for something other than pitch. You can set vibrato, including a delay, gate probability, random note probability, touch behaviors, and many other facets of your sequence quickly and easily. The AUX CV output can send envelopes, slewed gates, secondary raw CV, amongst other stuff. The T12 is a really powerful, highly flexible, and intuitive module that is fun to use. Just don’t forget to save your work in one of the many save slots, or else you’re gonna lose all your shit. Ask me how I know. Fortunately this particular patch is pretty easy to reproduce should I have the need.

For this initial patch I wanted to keep sequencing as simple as possible. A slowly plodding 10 note, repeating sub-bass line via the Humble Audio Quad Operator that would flood the audio and shake the room. I was loosely aiming for a post-rockish feel in the progression. It’s intentionally loud, though not so loud that the piano can’t still be clearly heard. With the wandering clock set to /8, and after a smidge of tuning the individual notes in the sequence to what I wanted, I pretty quickly got what I was after.

Which isn’t to say that the bass line is without issues.

Firstly, I’d like to note that both the high level and super-low frequencies were exactly what I was trying to accomplish. I was looking for film score kind of epic. The kind of bass that rattles walls and that you can feel in your stomach. That said, there’s far too much audio gear, including very high quality audio gear, that has a difficult time reproducing C1 (32.70Hz). My audio monitors, a set of Focus Alpha 80 studio monitors only reach down to 38Hz before the cutoff becomes pronounced. At 32Hz, the tone could still be heard, but not with near the authority it should have. D1 (36.71Hz) had similar issues, although not nearly as marked. By the time we get to E1 (41.2Hz) things are booming, but of the 10 notes in the bass sequence, only 5 can be heard with the vigor I intended, and that’s through a good pair of studio monitors. Fortunately the cans I used to record this patch, a set of GK Ultraphones, and the AirPods Max Bluetooth headphones I use for general listening, have no pronounced problems with reproducing the low C. But if I were to record this patch again, and I’m highly considering it, I’ll pitch the entire piece up 4 full semitones (E1) to avoid that conundrum. It’s one thing for a bass heavy piece to not play through phone, tablet, or laptop speakers. It’s a different sort of problem when high quality studio gear can’t do it. Any system with a subwoofer should really shake the foundation, but you shouldn’t need a subwoofer to properly hear music.

The last voice was a spur of the moment addition to the patch. I didn’t know exactly what, but I knew the patch was missing something. It needed one last final touch. It needed Plaits. Though it certainly has its limitations, Plaits is one of the most versatile and best sounding oscillator modelers available. Everything from kick drums, a scaled down Rings algorithm, and FM, plus more is possible with Plaits. At first I didn’t really know what I wanted, other than it be sparse. The Rings algorithm didn’t really fulfill the role. It took away from the patch as much as it added to it.

But as I made my way through the modes one by one, I landed on the final green algorithm: Vowel and speech synthesis. This would normally be unremarkable, but as it happened, I kept hearing the word “Red.” How the various knobs had been set while testing other algorithms landed me smack at the beginning of the colors of the rainbow. I slowly turned the Morph knob to see what else was hidden there, and found a slew of words. At first I set up modulation of the Morph to cycle through the words quickly. Think Robot Auctioneer. And although this addition certainly moved me in the right direction, it still wasn’t the destination. There were too many words being synthesized too quickly. It was slightly distracting, and not wholly complementary.

After a bit of envelope experimentation, I settled on 4 words: Red, Orange, Yellow, Green, “said” at a slightly slower than “natural” pace, and with a fairly thin tone. This gives the voice an almost sad feel, which I think slightly tempers the optimism and hope found in C major piano alongside an epic bass line. It brings a bit of the non-perfection and often lonely feel of reality back into scope, and that even non-perfection and loneliness can be contained within beauty.

After repeated listens, I know that I wouldn’t send any pitch information to Plaits were I to record this again. I think having it repeat at the same pitch would have an even larger impact, and be more focused.

One last new module I used is the Intellijel Amps VCA. Two of them chained, actually. Although I initially planned and built this case with an Intellijel Quad VCA, I recently realized the power of fully cascading VCAs,2 and decided to replace one of my Quad VCAs with this pair of Amps. Even with the first use I could see the utility in cascading inputs. The ability to patch one input and get out several signals that are related, yet separately attenuated and/or modulated, for use throughout a patch is powerful. Of course multiple related outputs could also be accomplished by patching multiplied copies of the signal into all four VCA inputs, but with cascading inputs we can eliminate at least six patch points and three patch cables. Efficiency is key. Add in ring modulation and signal inversion, and Amps is a powerful tool indeed.

Modules Used:
Sitka Instruments Gravity
Doboz T12
Nonlinearcircuits Stochaos
Expert Sleepers Disting Ex
Humble Audio Quad Operator
Mutable Instruments Plaits
Mutable Instruments Veils
CalSynth Changes (MI Stages) (w/ quimem)
CalSynth uO_C (w/ Phazerville)
Addac Systems Addac508 Swell Physics
Xaoc Devices Batumi II + Poti II
Make Noise QPAS
Intellijel Amps
Qu-Bit Electronix Nautilus
Blue Mangoo Stratosphere Cloud Reverb (AUv3 plugin)

Performed and recorded in 1 take in AUM on iPad via the Expert Sleepers ES-9.

*****

  1. According to the developer, Gravity should (fairly) soon get a firmware update which adds the ability to adjust gate duty size as a prominent feature, rather than only short 15ms triggers. This addition would make the Gravity outputs far more useful as a clocked modulator, and make it able to trigger longer ASD or ADSR envelopes that are determined by gate length. The developer has also noted that MOAR divisions and multiplications of the master tempo will be added.
  2. A fully cascading VCA is one in which all inputs, CV inputs, and outputs are normalized to the following channel until the normalization is broken by a plugged in jack. This configuration allows for a flexible array of both CV and audio patching, capable of complex mixes or routing.
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Stochaotic Bubbles: Effervescent Chaos Up And Down

Since I’ve recently received several modules, I’ve been using them rather heavily of late, and they’ve kind of taken front and center. The Nonlinearcircuits Stochaos and Humble Audio Quad Operator are featured in many of my recent patches, and this is no exception. I wasn’t sure, exactly, what I wanted with this patch, but I knew I wanted a chaos clock that was moving fast. I wanted lots of gates firing quickly, and use those gates to hit 4 separate LPGs, this time a pair of Tokyo Gates. Then I knew I wanted these quickly firing notes to be heavily delayed, and sent to a resynthesizer to fill in space and give something for those quickly firing notes and repeats to swim in. I wasn’t imagining bubbles when I first started, but that’s what I kept coming to as I was fiddling with the patch, and after a while leaned into this theme a bit to see where I could take it.

Getting a fast chaotic clock was the easy part. I’ve been using chaos-based clocks almost exclusively for a few months. I don’t mind a grid, but most of my creative inclinations are more towards malleable textures, and chaos provides an almost perfect ebb and flow. At slow tempos it’s definitely noticeable, but this patch was to be clocked at a very high rate; perhaps even approaching audio rate, and those differences at high rate are much less noticeable As per usual, I sent the modulated chaos signal to Divide & Conquer, before sending a fast division to Stochaos. From there the chaos-generated gates would go to the CalSynth Changes to create some snappy decay envelopes that would hit the CV input of four separate Tokyo Gates. The outputs of the Tokyo Gates were mixed into 2 signals in the Mutable Instruments Veils, and finally sent to the AI Synthesis 018 Stereo Matrix Mixer.

The audio is from the 4 operators of the Humble Audio Quad Operator. Although I initially experimented with tweaking the wave shape of the operators, several times, actually, I settled on sine waves. I also tried to work in some FM, but I couldn’t find exactly what I was looking for, which is likely because I was using all 4 operators as carriers, rather than trying to use just a couple of the oscillators as carriers, with the others acting as modulators. It’s tough to get oscillators to behave when you have lots of cross frequency modulation happening. Generally it’s pretty pedestrian as far as the audio source, but there are so many individual notes that are echoed so many times that anything much more complex might be a wall of sound rather than something more enunciated.

The pitch signal is taken from a slow chaos wave through Xaoc Devices Samara II for some careful offset and attenuation before going to uO_C’s Quantermain for quantization into D minor (even if I have no idea what the oscillator is actually tuned to), before being sent to the v/oct input on the Quad Operator. That accounts for the generally up and down nature of the pitch progression. It’s also a good example on how chaos operates. It’s steady-ish, but there are definitely times when the chaos deviates from its path. Sometimes that means speeding up or slowing down. Sometimes that means direction reversals. Sometimes it means lingering at some pitches longer than others. You think you know what’s going to happen, but then the chaos surprises you, providing something interesting. Even still, I feel like there is too much of the same thing when it comes to the pitch in this patch, but since it was more an exploratory patch I think I can forgive myself.

I recently became aware to the dismal fact that my main synth, a large set of separate subsystems that comprises 1,560hp and that has another 588hp in interchangeable subsystems, did not have a vactrol-based LPG in it. Despite having several vactrol LPGs from the Make Noise LxD and Optomix, to the Nekyia Sosumi, and still more, not a single one was in my main case. All of them had been moved to either my Make Noise Satellite Subsystem, or else my Side Case. I have plenty of non-vactrol-based LPGs like the Rabid Elephant Natural Gate, Bard Synthesizers VTG, Frap Tools CUNSA, and Verbos Amp & Tone in the main case, but not one vactrol LPG. As soon as I came to this realization I knew that it couldn’t stand for a single moment longer, and moved a pair of Tokyo Tape Music Center Tokyo Gates from my side case back to the main case. I’d get 4 channels of my favorite vactrol LPG to go along with all of the additive-style oscillators I tend to gravitate towards. Three Body, Quad Operator, Algo, Mob of Emus, and many others besides pair so naturally with a LPG that it seems boneheaded to not have them ready for the occasion.

I’ve liked LPGs for a long time. My first foray was via the Make Noise Optomix, which quickly led to several others, both with and without vactrols. I like both types, but it’s the non-exactness of vactrols that really draws my ear. They can be a little sloppy, particularly when hit repeatedly with a gate or envelope. Vactrol-less LPGs like the Natural Gate or DXG too sound great, but there’s something about their precision that doesn’t feel the same as with vactrols. It’s almost too perfect, and too repeatable. I also feel that vactrols bleed prettier, which is a patching technique I love to use. I don’t know whether I was insistent in using vactrol LPGs in this patch because I thought they’d be best, or because I had just put four of them back in my main case, but I decided on using the venerable Tokyo Gate.

Even if I don’t use Tokyo Gate very often, it is my favorite of the vactrol LPGs I’ve had. Its decay is adjustable (to a degree) with the Bridge control, pleasant, and even can have a little squelch of resonance if you pin the Bridge knob full CW. Although you can directly ping Tokyo Gate with a trigger or gate just fine, I’ve found that envelopes generally sound more pleasant to the ear. There’s a harshness with slamming a gate into that isn’t there when using a well shaped decay envelope.

In this patch, because I was using sine waves, the Tokyo Gate probably performs not much different than a regular VCA. There are no harmonics in a sine wave to reveal and hide again as the filter also goes up and down with the volume, but you still get that vactrol decay which can’t really be had with anything else. I also liked the perceived sloppiness of the vactrols as they were being repeatedly hit by envelopes. All of the chaos-derived gates flying about in rapid succession, triggering short, snappy envelopes started to resemble four separate telegraph signals flying about in space.

And although the effect of four vactrol LPGs pinging away was pretty cool, I knew that I wanted a lot more of it by using delay. These pings were the start, not the end. Far from it. Rather than using one delay like I normally might, I opted to use two of them in parallel.

Delay number one was the Venus Instruments Veno-Echo. Its reverse function per channel was being modulated by chaos-derived gates from the very slow end of the Divide & Conquer. Since the original chaos clock signal itself was running quite fast, even very low divisions would trigger too frequently for me, and decided to run those gates through the CuteLab Missed Opportunities gate probability utility that I tend to use in most of my patches.

The second delay is the Olivia Artz Modular Time Machine. Using various delay taps would ensure the effervescent feeling I was getting as the patch started to take some shape, spraying delays all about the stereo space. Besides creating that bubbly feeling I was now striving for, the Time Machine is also the source audio for the Qu-Bit Aurora resynthesis module that fills in the gaps and helps create something thicker for those bubbles to float in.

Altogether we have the feeling of bubbles floating around space. One thing I might try in a future patch like this is to use the pitch as CV for the clock rate. As the pitch changes, so too does the clock, creating more gates with higher pitched bubbles, and fewer with lower pitched bubbles. I’d also be a bit more inventive with my pitch sequence as well. This is just a chaos signal triggering Quantermain as it moves through from note to note in the selected scale. Even if I want to use chaos as a source for pitch, in order for there be some quality pitch movement I’d be better off using one of the chaos derived gates to trigger the quantizer via some labyrinth of gate probability, logic, and/or a Bernoulli Gate.

Altogether there isn’t anything special about this patch other than it was experimentation throughout. Experimentation with chaos as pitch. Experimentation with extremely fast gates with vactrol LPGs. Experimentation with delay taps to get a good feeling of watching bubbles in a freshly poured glass of Coke. Experimenting with parallel delays. Experimenting with Aurora.

Modules Used:
Nonlinearcircuits The Hypster
Nonlinearcircuits Divide & Conquer
Nonlinearcircuits Stochaos
Nonlinearcircuits Triple Sloth
Xaoc Devices Samara II
CalSynth uO_C
Humble Audio Quad Operator
CuteLab Missed Opportunities
CalSynth Changes (MI Stages)
Mutable Instruments Veils
Tokyo Tape Music Center Tokyo Gate
Olivia Artz Modular Time Machine
Venus Instruments Veno-Echo
Qu-Bit Electronix Aurora
Knob Farm Ferry
Vongon Ultrasheer

Improvised and recorded in 1 take on iPad in AUM via the Expert Sleepers ES-9.

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A Patch In Which The OAM Time Machine Does The Heavy Lifting

I keep it no secret that I’m a certified delay junky. I love all kinds of delay from murky analog repeats, to the beautiful compression of tape delay, to pristine copies of digital delays. I dig them all. Even if my collection has shrunken significantly, at one time I had over 30 delay pedals, I still have a few delay pedals I consider choice, like the Oto Bim, Vongon Polyphrase, and the Free The Tone Future Factory FF-1Y Future Factory. I have dual Echofix EF-X2 tape delays. And it shouldn’t be a surprise that I have several Eurorack delay modules. From the mighty Verbos Multi-Delay Processor, to the Xaoc Devices Sarajewo, and the Qu-Bit Electronix Nautilus to the Venus Instruments Veno-Echo (plus yet more), I’m covered when it comes to Eurorack delays. But when the new Time Machine from Olivia Artz Modular was announced, I knew there was no way I could pass on it for too long before I hit “Add to Cart.” Due to a confluence of random events, I was informed by OAM within minutes of the Time Machine being released for sale at Perfect Circuit, and so was able to snag one quick without the ~6 week wait time if you order direct from OAM. I would have ordered one anyways, but bypassing the wait was a nice surprise, and moving their product through retail stores helps them get more retail orders and wider distribution.

When I imagined the Time Machine, I was imagining a stereo version of the Verbos Multi-Delay Processor. I’m sure much of the Time Machine was influenced by the MDP, from its looks to its multi-tap nature. And although it can certainly replicate some of the things the MDP does, the Time Machine is definitely something different, and highly rewarding. True stereo is a wonder to behold.

One thing I’ve learned about testing delays is that if you really want to hear its voice, you need to feed it short transient signals. This moves the dry signal more out of the way and allows the delay room to breathe and be heard on its own terms. I use these quick notes to test every delay I get. With Eurorack, that test is almost always short pings in an LPG in order to see what’s its limits are. How clean (or dirty) are the repeats? How does the feedback behave? Does it do The Thing?1 How do the taps behave? How does the feedback go into entropy? This simple test allows me to really evaluate how a delay sounds and behaves.

This er of this patch is sets of sparse plucks of the Bard Synthesizers VTG (Vacuum Tube Gate – it sounds wonderful, if not quite like a traditional LPG). These plucks are created using the Humble Audio Quad Operator, which has the 2 waves being modulated by The Hypster, and one of the Ratios modulated by the Bindubba, into the LPG’s two input channels. The gates are hit by envelopes created by the CalSynth Changes (MI Stages), which is triggered by chaos-derived gates of the Stochaos. From the VTG, it goes straight to the matrix mixer, and onto the Time Machine.

After tweaking the Time Machine faders to get a delay pattern I really liked, I was pleased with what was happening, but I wanted more. Delays are cool and all, but dancing repeats do not make a track. After a second it clicked: “Panharmonium really likes short transients!” Although I wasn’t at all sure what I might get out of the Panharmonium, I thought it would be interesting, and that assumption was correct. After wiggling some knobs and adjusting the sampling interval (using a division of the clock used for the Time Machine), what I got was far more than interesting. It was the best thing I’ve heard from the Panharmonium in my own practice. A sort of distorted cello/upright bass sound that really fills in the space, and is harmonically relevant to the repeats that form the base of the track. Even if you can’t hear the repeats themselves through the Panharmonium, the sound of the it is a direct transliteration of those repeats in the form of resynthesis. Without the repeats, the Panharmonium isn’t making any sound. Since the Panharmonium sounded almost like something you’d hear in a sludge metal or Post-Rock context, I decided to also route the Panharmonium output to the Bizarre Jezabel Mimosa and really give it some drive, which was a perfect choice.

The patch is finished off with some reverb courtesy of the Oto Bam Ambient algorithm.

Modules Used:
Humble Audio Quad Operator
Bard Synthesizers VTG
Nonlinear Circuits Stochaos
Nonlinearcircuits The Hypster
CalSynth uO_C
CalSynth Changes (MI Stages)
Olivia Artz Modular Time Machine
Xaoc Devices Batumi II
Xaoc Devices Samara II
Rossum Electro-Music Panharmonium
Bizarre Jezabel Mimosa
AI Synthesis 018 Stereo Matrix Mixer
Knob Farm Ferry
Oto Bam

Improvised and recorded in 1 take on iPad in AUM via the Expert Sleepers ES-9.

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  1. When it can sit on the edge of feedback without running away uncontrollably. It’s even better when it can do that at a low volume, while still allowing your repeats to go through at full volume. The EF-X2 is masterful at this trick.
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Chaos Organ: A Quad Operator Experiment

Hi, my name is Chris, and I’m a chordaholic.

Lately I’ve been in a polyphonic mood, attempting to find evermore methods of creating chords and chord sequences with the modular synth. Using a DAW for this sort of thing is child’s play, but in modular synthesis, creating polyphonic chords isn’t a straightforward task most of the time. Most oscillators can only output one pitch at a time, and using multiple oscillators can create timbre mismatches. Tuning 4 or more oscillators to the same pitch while not suffering from pitch drift over time is a chore and a half. Sequencing chords in a traditional modular sequencer can be a mission rife with potential problems, and you don’t always want the repeating uniformity of a sequence, but something more organic. In short, modular synthesis is traditionally a monophonic enterprise, with only a small handful of monophonic voices being used together. A melody, a bass line, perhaps something else to fill in space, and some effects to create a stereo space. Full on chord generation isn’t common because it’s a tedious exercise that generally requires a lot of gear and even more patience. But over the last couple of years this is beginning to change. Although there have always been ways to create chords and chord progressions in modular synthesis, it’s not until relatively recently that we can more easily create chords. Oscillator banks like the Xaoc Devices Odessa (with its expander, Hel), Humble Audio Quad Operator, and RYK Modular Algo, and chord sequencers like the NOH-Modular Pianist make composing with chords on the modular a much more efficient and simple process.

In a previous patch I used the very excellent (and recently updated) NOH-Modular Pianist to create chords that were triggered by an irregular chaotic gate pattern. Although I am generally psyched about how that patch turned out, there are still a couple spots of ugliness that appear due to a bad match of back-to-back chords in the progression. On their own they sound fine. But once smeared out by the delay, FFT resynthesis, and reverb, there is some clashing that happens, creating some ear-cringing dissonance. I wanted something cleaner, and I didn’t want to have prescribed chords, but something that could change organically with a bit of modulation, without the worry of a spicy note peeping its ugly head in. Enter Quad Operator.

The Humble Audio Quad Operator is a bank of 4 oscillators that can be tuned to harmonic and subharmonic ratios of a base pitch. Tune the base pitch to your liking, then simply adjust the ratios of each operator, and you have oscillators that are all harmonically in tune. Patch in a single v/oct signal, and all 4 operators will move along in harmony. The Quad Operator is primarily designed as a the ultimate FM oscillator with any traditional FM algorithm possible, along with any other combo of modulator/carrier you can imagine. But with each operator being independent with its own output (both in a mix and independently), using it as a complex chord generator is a very happy side benefit. Input a single v/oct signal, output always-harmonically related chords. Add in some modulation of a couple of the operator’s ratios, and not only will the chords always be harmonically relevant, they’ll also quite often be different (even if the base of the chord is the same). For modulating the ratios I used both the Nonlinearcircuits Stochaos and the Auza Wave Packets.

There are lots of methods for getting a nice v/oct signal. Sequencers are the obvious solution, but with a quantizer any signal can be a used for pitch. S&H is extremely popular, but random pitch is only slightly less boring than patterns repeating themselves over and over in the exact same way. One solution is to use LFOs alongside triggers to create melodies or arpeggios. Envelopes work great too. But I wanted something a smidge different. LFOs and envelopes repeat themselves by nature. Unless modulated, an LFO or envelope is the same up and down every time. This regularity can be mitigated by irregular triggers, but then it starts to veer towards random, which isn’t really what I’m after. Enter chaos.

In my post, Chaotic Gates, I explained how chaos signals are regular-ish. They take the same general path on each pass, but some unknown irregularity in the feedback path will shift it off course in a non-regular way. These signals are kind of regular, but enough differences come about that there are always surprises. I mostly use chaos as a modulator of some kind. Opening and closing filter cutoffs or wavefolders, slowly modulating level, timbre, or some other facet of a patch. Today I would use it for pitch.

In most circumstances I would use triggers alongside my CV input with a quantizer. Send off a trigger, and whatever voltage is present at the quantizer’s input is sampled, quantized to the nearest note of your chosen scale, and output to the v/oct input on your oscillator. But some quantizers can function without a corresponding trigger, sensing voltage changes, and quantizing automatically once it detects a change large enough to be a separate note in the scale. Quantermain, the quad quantizer algorithm on the ever-useful Ornament&Crime, has this capability, and I decided to give it a whirl. It should be easy enough. Shove in a chaos signal, get quantized pitch CV on the output. And by and large, it was that easy. I knew I wanted fairly slow chord changes, so I needed a slow(er) moving chaos signal. After a bit of attenuation of the chaos signal to reign in the range, I was getting exactly what I wanted. Irregularly moving chords that shift at irregular speeds and that have irregular movement both up and down.

But chords themselves, cool as they are, need embellishment to be interesting. For effects, I sent the chords, via the stereo matrix mixer, to the Qu-Bit Nautilus for some smearing with low pass filtered delay, before going to the Instruo Arbhar. My initial plan was to have some shimmery granular action floating on top of the chords, but I could never find what I was hoping to get. Instead I found a happy accident of harmonically relevant dancing grains that moved to a rhythm.

These dancing grains, although not at all what I envisioned when I set out on this path, turned out being perfect, giving a sense of life inside the thick chords. Like minnows in a lake, or lightning bugs in the night.

Enjoy!

Modules Used:
Nonlinearcircuits Triple Sloth
Nonlinearcircuits Stochaos
Auza Wave Packets
Humble Audio Quad Operator
ST Modular Sum Mix & Pan
AI Synthesis 018 Stereo Matrix Mixer
Qu-Bit Electronix Nautilus
Instruo Arbhar
CalSynth uO_C
Knob Farm Ferry
Mutable Instruments Blinds
Oto Bam

Improvised and recorded in 1 take on iPad in AUM via the Expert Sleepers ES-9.


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