MATRIXSYNTH: Origami Custom Osc NO TALK demo // Korg Prologue

Sunday, June 09, 2019

Origami Custom Osc NO TALK demo // Korg Prologue

Published on Jun 9, 2019 Ron Cavagnaro

"This is an improvised demo of the Custom Oscillator 'Origami' for the Korg Prologue / Minilogue XD. Origami uses wavefolding to create complex waveforms. With this demo we also used a novation circuit for the drums, roland mx1 to mix and add live MFX, and the sequence on the prologue was made with synthstrom deluge.

Origami can be acquired for free on their webpage by signing up to their newsletter."

"The Origami oscillator uses wavefolding to create complex harmonic distortion from basic waveforms. The input waveform to the wavefolder can be varied between a sine wave and an asymmetrical waveform (triangle/flattened sine) to change the basic timbre. This waveform is then fed into the wavefolding algorithm where the amount of folding (SHAPE) increases the gain at the input of the wavefolder.

A DC offset control pushes the waveform more into the top half of the wavefolder, that can vary the harmonic distribution between even and odd harmonics. The main LFO-to-Shape modulates this DC Offset (note: not the SHAPE/wavefold control itself) – which tends to create odd/even harmonic oscillation.

An additional Origami ADSR envelope can modulate the input gain of the wavefolder with the Envelope Amount control. Attack, decay, sustain and release are adjustable. This adds further movement of the produced harmonics allowing for complex evolving textures and pads.


SHAPE Wavefolding Amount

SHIFT_SHAPE Manual DC offset

Envelope Amount

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