Nonlinearcircuits Beat Frequencies Eurorack module is a pattern generator. Its ultimate function is to create rhythmic pulses based on the interplay of two input signals and an assembly of a unique 4-set LED montage.
This second-generation module, inspired by the beat frequency indicator schematic, expands on the original idea by letting go of CV, knobs and XNOR output. It enriches the experience massively by introducing twelve supplementary gate outputs along with a battalion of vibrant, flickering LEDs.
The concept guiding this module is straightforward. Two different signals are engaged in a musical duel that leaves an evident impact on a quartet of LED rings. The rivalry between the frequencies dictates the rotation of these rings, which in turn design progressive, mesmerizing rhythmic patterns. If both signals are harmonious in terms of frequency, just a single stoic LED lightens up, creating a stark contrast against its chaotic counterparts.
The module's behavior is wonderfully irregular. Gates make sporadic appearances. The kaleidoscope of LED lights could be making several revolutions one second, then stutter erratically in the next. Sometimes, it glitters in a seemingly immobile state before rebounding into a whirlwind of rotations. The absence of predictable patterns at audio and clock rates give the module a surprising edge, enabling it to design an ever-changing array of rich patterns that prove useful in an expansive range of soundscapes.
The quartet of LED sets faithfully reflect these sophisticated patterns. The topmost set acts as the principle output and follows a steady, confident pace. The second LED set is bound by half the speed, echoing the measured rhythm of the top LED. The third set of LEDs behaves differently, darting restlessly between diagonally positioned bulbs.
The final LED set flutters intermittently, splashing rhythmic bursts onto the canvas rather than continuous patterns similar to topmost set. This unexpected pattern-breaking characteristic augments the module's rich potential in terms of output.
In conclusion, the Nonlinearcircuits Beat Frequencies Eurorack module is not just an evolution of its celebrated precursor, but an exciting new chapter in the story of pattern generators. This module is a testament to the potential of eurorack modular systems in pushing the boundaries of what is possible in electronic music production and sound design. The irregular, quasi-chaotic behavior of its LED displays and gate outputs hold untapped potential for adventurous artists and producers looking for a distinctive, unpredictable rhythm element in their setups.
Example Usage
Picture this: In our Eurorack ecosystem, we connect the output from a steady clock source to the first input of the Nonlinearcircuits Beat Frequencies module. And then, for the second input, we connect an analog oscillator, which we set to a faster oscillate frequency. As we begin to observe the module, we see the main LED (the topmost one) start rotating clockwise, indicating that the analog oscillator has a higher frequency. This rotation continues to happen at regular intervals - producing a steady, repeatable gate output.
Consequently, if we plug the output from the first LED into a percussive sound source (like a drum module), we can hear a regular rhythmic pattern emerge. However, this isn't just a straightforward clock division, as the LEDs sometimes stagger between stages, occasionally sticking to one spot, thus injecting organic rhythmic variations into the mix.
Now, let's get adventurous and steadily reduce the frequency of our analog oscillator. The LED rotation slows down and eventually pauses, showing that our clock source and analog oscillator have the same frequency. Similarly, we can see that the rest of the LEDs slow down and differ in behavior, with each giving us a different rhythmic pattern based on the frequency differences.
Finally, if we then increase the frequency of our oscillator beyond our clock source, we see the LED rotation change direction, indicating a change in which input is running at a higher frequency. This spontaneous frequency modulation and rythm improvisation is what makes the ‘Beat Frequencies’ module an unpredictable yet usable pattern generator that can inject variations in rhythm and groove into any electronic music production or live performance.
Here is an intermediate-level usage example of the Nonlinearcircuits Beat Frequencies module. This exploration is not a mundane step-by-step tutorial but rather a journey through the seamless combination of pattern generation and frequency modulation to yield captivating soundscapes.
To begin, connect a sequencer like the Mutable Instruments Grids or a rhythm generator like the WMD Metron to one of the two signal inputs of the Beat Frequencies module. Then, plug an LFO (low frequency oscillator) into the second signal input.
Now, observe the LEDs. If the sequencer or rhythm generator is running at a higher frequency than the LFO, the Beat Frequencies module's LEDs will light up in a clockwise direction, indicating that the above rhythmic sequences are dominant or "leading" the combined output. If the LFO assumes a higher frequency, the LEDs will light up in an anti-clockwise direction, implying the LFO dominates the resulting patterns.
Experiment with the strength of the LFO. This will influence the speed of the LEDs' rotation, and thus, the unpredictability of the pattern. Notice how the module outputs patterns in bursts: confidently, hesitantly, or sometimes shimmering at a certain spot. Remember, the unpredictable nature of output is not an anomaly. It's a unique feature of this module that contributes to generating complex musical landscapes.
Now, plug your outputs from the Beat Frequencies module into some percussion or drum modules. Listen carefully to the unique rhythms being created; they are a direct product of the synchronicities and inconsistencies between the two input signals’ frequencies. You might notice some fascinating start-stop effects, and perhaps some unexpectedly pleasing rhythms that shift and evolve over time.
Next, try manipulating the timing dynamics of your sequencer or rhythm generator. Or vary the shape and frequency of the LFO. Notice how these changes directly affect the resulting rhythmic components coming out of the Beat Frequencies module. The complex patterns are a new sonic entity, perhaps a lively conversation between the rhythm generator and LFO, influenced by the avant-garde modulation of Beat Frequencies.
Finally, a shimmering pattern from the Beat Frequencies coupled with a delay effect or reverb could add a fascinating dimension to your sound. Play with the placement of these effects to yield different atmospheres.
The magic of the Nonlinearcircuits Beat Frequencies lies in its ability to synergize, juxtapose, and manipulate multiple signals into captivating combinations of groove, making it an astounding addition to any eurorack setup.
Further Thoughts
In a maze of tonality and rhythm, the Nonlinearcircuits Beat Frequencies module brings a unique twist to pattern generation and modulation in the Eurorack modular universe. A brainstorm born from an aged schematic, this module is designed to yield the unexpected and organically create serendipitous patterns.
With its primary mechanics driven by comparing the frequencies of two signal sources, the Beat Frequencies module pulsates and controls a dozen gate outputs depending on whether the higher frequency signal influences the clockwise or anticlockwise motion of the LED ring. Visualise this as an interactive musical compass, its directional light pattern varying in speed to indicate the relationship between the two frequencies: Similar frequencies slow down the motion, disparate ones hasten it.
Let's journey through an example of this module's operation in practice. Imagine you're crafting a techno sequence driven by stark rhythmic variations. Feed the Beat Frequencies module with a steady bass drum signal, and a second signal from a variable sequencer. With the same frequencies, you'll see a single lit LED and steady rhythmic output. But as the sequencer signal varies, the Beat Frequencies module will unleash evolving rhythmical patterns matching the changing relationship between the two input frequencies, bringing an unpredictable and mechanical heartbeat to your techno ensemble.
Look at the four LED sets helping visualize the module's operation. The topmost LED is your primary guide, with the below ones offering half-rate, diagonal jumps, and burst-style motion each bringing its distinct flavor to the outcome. The half-rate LED for instance, can be perfect for introducing mesmerising half-time breakdowns, while the jittering third LED gives your performance an erratic spark, as it leaps across diagonals, unexpectedly stepping between pairs.
As you engage with the Beat Frequencies module in both audio rates and clock rates, you'll often find it defying your expectations, yet simultaneously offering patterns that can fit right into your mix. Whether you're crafting an ambient soundscape, or a techno banger, the Beat Frequencies module is more than a pattern generator — it's an instrument with its own quirky, unpredictable personality, waiting to infuse life into your sonic narratives with no two performances ever sounding exactly the same.