Exploring Natural Complex Chaos with the Frisson Eurorack Module

Lose yourself in a world of decentralized oscillations and chaotic patterns with the Frisson Eurorack Module; an exceptional piece from Nonlinearcircuits. Based on the Mackey-Glass equations originally developed to delineate the delay in physiological systems when generating or reducing certain cells, the Frisson module brings with it a profound sense of dynamism and layered complexity in sound recreation. Comparable to nature’s resilience when maintaining balance amidst chaos, this module yields a rich palette of chaotic but controllable patterns for your music scrutiny.

Frisson features a three-part system—a nonlinear stage, a low pass stage, and a delay stage—that orchestrates in tandem for the maximum output. The delay stage is a meticulous amalgamation of 8 Bessel filters, configured for sub-audio rates, which are voltage-controlled via LDRs. This configuration bears an uncanny resemblance to an 8-stage phase shifter. The individuality of this module truly shines as each filter stage has an output to the front panel—a feature that also broadens the scope for creativity and versatility in sound generation. Moreover, Frisson also offers an external input to introduce signals into the chaotic setup, paving the way for a unique auditory experience.

Sit at the helm of your sound expedition with Frisson’s superior control mechanisms. Adjust the frequency of the chaos via CV or with the turn of a knob. The module, equipped to self-oscillate, runs seamlessly without any input. Turning the Chaos knob to maximum might momentarily pause the function, but the module continues to operate efficiently at all other settings, even with the injection of CV or other signals.

Flick the switch to CV Phaser mode and behold the transformation of the Bessel filter section into a powerful voltage-controlled CV Phaser, replete with 8 differing outputs of slightly delayed and progressively slewed versions of the original CV. And let us not overlook the flexibility and control offered by the feedback pot.

The allure of the Frisson module extends even further with its user-friendly customization. Adopting the capacitor values given in the Build Notes, you can configure the operating frequency range of the module to suit your preferences whether that views favor slowness or rapidity. But why confine yourself when you can undertake an incredible journey into sound manipulation with one, two, or all three variants?

In conclusion, the Frisson Eurorack module’s intrigue lies within its beautiful blend of scientific precision and artistic flair. Its embodiment of the Mackey-Glass equations shines a fresh light on the traditional chaos module, making it an essential addition to your Eurorack. Inviting both simplicity and complexity in its function, the module permits you to engineer a sound realm that’s bountiful in its chaotic yet harmonious patterns. A true delight for the electronic music enthusiast at heart.

Example Usage

To start exploring the natural complex chaos generated by the Frisson Eurorack module, you first need to understand its foundation in the Mackey-Glass equations. This module is designed to mimic the delays seen in physiological systems when responding to changes in cell concentrations, resulting in intricate chaotic patterns that can easily be manipulated.

The core of the Mackey-Glass system within this module consists of a nonlinear stage, a low-pass stage, and a delay stage interconnected in a loop. The delay stage, composed of 8 Bessel filters configured for sub-audio rates, can be voltage controlled through Light Dependent Resistors (LDRs), providing a similar effect to an 8-stage phase shifter. Each filter stage has its output accessible on the front panel, allowing for easy monitoring and tweaking.

By adjusting the Delay section either manually using the knob or via control voltage (CV), you can modulate the frequency of the generated chaos. Turning the Chaos knob alters the intricate patterns within the chaos. Interestingly, this module is capable of self-oscillation, meaning it can operate independently without any external inputs. Although, you might notice a brief pause when the Chaos knob is maxed out, it continues functioning at other settings. Introducing CV or other signals further enriches the chaotic output across all settings.

Switching to the CV Phaser mode enables a unique functionality where the Bessel filter section, along with the feedback pot, transforms into a voltage-controlled CV Phaser. This configuration offers 8 distinct outputs containing slightly delayed and progressively slewed variations of the original CV input.

It's important to note that the feedback pot exclusively affects the output in CV Phase mode, being disengaged in Chaos mode. The module itself can be tailored to operate within different frequency ranges, with specific capacitor values provided in the Build Notes for guidance. While the slowest version is often preferred, you're encouraged to experiment with different configurations or even construct all 3 variations to explore the diverse sonic possibilities. Feel free to explore alternative capacitor values, keeping in mind the approximate ratios suggested for optimal performance.

Get ready to dive into a realm of mesmerizing chaos and creative exploration with the Frisson Eurorack module. For more details and technical specifications, visit the official product page on Nonlinear Circuits' website.

To use the Frisson Eurorack module, start by familiarizing yourself with its Mackey-Glass equations-based chaotic system. Adjust the delay section using CV or the knob to set the frequency of the chaos, while the chaos knob modifies the pattern. Experiment with injecting external signals to influence the chaos output.

Switching to CV Phaser mode enables the Bessel filter section to function as a voltage-controlled CV Phaser, offering 8 distinct delayed and slewed outputs. Note that the feedback pot operates solely in CV Phase mode and is disengaged in Chaos mode.

Explore different capacitor values as outlined in the Build Notes to customize the module's frequency range. Consider building multiple versions to experiment with various settings. Embrace the module's self-oscillating nature and its responsiveness to CV inputs for an engaging exploration of natural complex chaos.

Further Thoughts

In Chaos mode, the Frisson module offers a fascinating exploration into natural complex chaos based on the Mackey-Glass equations. By adjusting the Chaos knob, users can manipulate the intricate patterns generated by the module. Additionally, the module self-oscillates, allowing for uninterrupted operation even without external inputs. When injecting CV or other signals, the module continues to run, showcasing its versatile nature.

For those interested in delving deeper into controlled chaos, switching to CV Phaser mode unlocks a new realm of possibilities. By leveraging the Bessel filter section and tweaking the feedback pot, users can create eight distinct outputs with slightly delayed and increasingly slewed versions of the original CV signal.

Whether opting for the slowest version or experimenting with different frequency ranges, the Frisson module empowers users to customize their chaotic explorations. With detailed capacitor value recommendations provided in the Build Notes, builders can tailor the module to suit their preferences and delve into the depths of organized chaos in a modular environment.