Delta Sound Labs Fold

Fold is a distortion synthesis audio effect plug-in that only the engineers at Delta Sound Labs could dream up.

Calling on their background in modular hardware design, the team has found a novel approach to creating warmth and distortion in software.

By using an assortment of modules in an in-series FX chain, Fold imbues input signals with harmonically rich overtones and, if pushed to the extremes, completely transforms them with a unique form of distortion.

At the heart of Fold is its wavefolding engine.

First pioneered by synth legend Don Buchla, wavefolding is the act of folding a wave back on itself after reaching a given threshold.

While this naturally produces distortion and harmonics, Fold also includes a bit crusher module to further smash the input signal.

Fold's combination of oversampling, distortion, and wavefolding results in tones that are timbrally rich on one hand, and over-the-top destroyed on the other, even with simple periodic input signals.

To tame the sound, Fold comes with an analog emulation of a resonant low-pass filter that offers more control over any unhinged results.

Each parameter is also syncable to its own LFO, each with an amount slider and may be synced to a host tempo within a DAW for more creative sound design and mixing effects.

Fold also ships with a number of professionally designed presets that showcase the versatility of its engine.

Features

• Hard and Soft Clip Distortion Morphing
• Wavefolding
• Bit Crushing
• Analog Low and High Pass Filter Emulations
• Four Syncable LFOs with Mappable Phase Reset Buttons
• Local Mix Sliders on Each Module
• Three LFO Waveform Types
• Mono and Stereo Processing
• Switchable Oversampling
• Factory and User Presets
• On/off buttons for Drive, Fold, Crush, and Low Pass filter sections
• Local mix sliders for Drive, Fold, Crush, and Low Pass filter sections
• Drive/Fold Link button to allow concurrent use of both parameters with one slider
• FX is now a true Dry/Wet control
• Envelope follower to control FX amount relative to the peak amplitude of the audio input
• Hard sync/phase lock for LFO sections
• Visual feedback for LFO rate
• Oversampling factor UI
• Output volume graphical UI slider
• Stereo spread feature for use with true stereo inputs