Explore the often overlooked ‘End of’ function in modular synthesizers, as MonotrailTechTalk reveals its hidden potential. A masterclass in detail, this video explores creative applications beyond the usual suspects.

6. November 2025
JET
Diving into the Depths of Modular with MonotrailTechTalk
ADAC 506, Dobefer Quad ADSR, Doepfer A171-2, Erika Synths Dual Envelope
The Ghostly 'End of' Functions
MonotrailTechTalk introduces us to the elusive ‘End of’ function within the modular universe, a feature often overshadowed by its more celebrated counterparts. This function can be found in various forms such as End of Rise, End of Fall, End of Attack, and more. Each variation carries its own behaviour, adapting to the specific envelope or function generator it belongs to. These ‘End of’ functions offer a logic signal at the conclusion of a stage, like an attack or decay, leading to a wealth of sonic possibilities that are too often ignored in the modular community. By using the ADAC 506 and Erika Synths dual envelopes, MonotrailTechTalk lifts the curtain on this mysterious function, revealing how the end of fall generates triggers that can be used for rhythmic loops or syncopated sequences.

"The premise of an end of something function is that at the end of a stage, they generate a logic signal."
© Screenshot/Quote: Monotrailtechtalk (YouTube)
Trigger Delay Shenanigans

"A trigger delay is nice for all sorts of clock and pattern fun."
© Screenshot/Quote: Monotrailtechtalk (YouTube)
In this detailed exploration, MonotrailTechTalk unleashes the chaos onboard with the trigger delay technique using the ‘End of’ functions. Imagine transforming your modular setup into a clockwork of desynchronised precision – that’s exactly the realm we are delving into here. Monotrail demonstrates how end of fall or end of cycle signals can introduce random delays, tweaking the rhythmic landscape with precision. For instance, by using a steady clock to trigger a kick drum, a delayed signal can ignite a hi-hat, setting their relationship to be as tight or loose as you’d like. The potential applications don’t stop there; the option to generate phase-shifted LFOs or sync dual filters shows just how deep this rabbit hole goes. Such layering, with every layered movement precisely modulated, creates a rich tapestry of sound. For those with an appetite for the complex and unpredictable, this video offers a banquet of delicious sonic confusion. But remember, the real artistry comes when you leverage these delays to orchestrate everything from melodic drones to evolving stereo soundscapes.
Chaining Envelopes: A Modular Orchestra
Moving beyond triggers, MonotrailTechTalk reveals the reflexive playground offered by chaining envelopes using the ‘End of’ outputs. This could be likened to a modular orchestra, where each envelope plays a distinct role in a cascading sequence. The trick lies in using these envelopes to trigger one another in an endless loop, effectively creating a chain of sonic events. The interplay between multiple envelopes leads to an intricate dance, each modulating another in a spiralling feedback loop. It’s an ensemble performance where each component plays off the other, contributing to a greater whole. Using an arrangement of four envelopes, Monotrail constructs a complex web of modulation—a sonic jigsaw puzzle that’s ever-changing, constantly evolving. It’s here that Monotrail’s experience as a graphic designer truly shines, as he deftly visualises these mechanics with clarity. The resulting sound can be either gentle and harmonious or a cacophony of chaos, depending on how the signals are harnessed. The secret lies in the balance, with Monotrail showing us how to orchestrate this digital anarchy.

"This creates a looping chain of two different envelopes."
© Screenshot/Quote: Monotrailtechtalk (YouTube)
Unlocking the VCO Mysteries with CV Control

"Here I'm using the ADACS build-in randomization to add variety to the rise and fall time."
© Screenshot/Quote: Monotrailtechtalk (YouTube)
As we approach the final act, MonotrailTechTalk invites us to unlock the secrets hidden in Voltage Controlled Oscillators (VCOs) when paired with ‘End of’ signals. This segment is a technical tour de force, exposing the raw power of CV control in shaping soundscapes from the ground up. Using the end of rise or end of fall gates, Monotrail demonstrates how to manipulate LFOs to create rhythmic pulses akin to some strange mechanical heartbeat. By modulating rise and fall times, these outputs take on a life of their own, establishing control over an entire patch. The inherent instability, when used creatively, results in a dynamic pulse-width modulation effect that’s both random and captivating. This synthesis method elevates the modular experience from a sequence of notes to a living, pulsating organism. Part of the genius here is in how Monotrail incorporates the random element, using the ADAC’s built-in randomisation to subtlety alter rise and fall times. It’s this unpredictability that breathes life into the modular, taking the viewer from anticipation to mesmerisation as the patch evolves.
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https://www.youtube.com/MonotrailTechTalk
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