Disrumpo

Distortion Types

Disrumpo offers 26 distortion algorithms organized into 7 families. Types within the same family can be morphed smoothly between each other.

Saturation

Classic analog-modeled saturation and clipping circuits.

• Soft Clip — Tanh-based soft saturation with warm, symmetric character and primarily odd harmonics
• Hard Clip — Digital hard clipping that produces a full harmonic series for aggressive, harsh tones
• Tube — Asymmetric polynomial waveshaping modeled on vacuum tube gain stages, rich in even harmonics
• Tape — Tape saturation with pre/de-emphasis filtering; includes a Jiles-Atherton hysteresis model for authentic magnetic tape response
• Fuzz — Germanium transistor fuzz with soft clipping and saggy, "dying battery" response
• Asymmetric Fuzz — Silicon transistor fuzz with bias control, brighter and tighter than germanium with odd harmonic emphasis

Wavefold

Signal wavefolding algorithms that create complex overtone spectra by folding the waveform back on itself.

• Sine Fold — Classic Serge-style wavefolder using sinusoidal folding; produces FM-like sparse spectra
• Triangle Fold — Symmetric mirror-like folding with dense odd harmonics and smooth spectral rolloff
• Serge Fold — Lambert-W based circuit model derived from the Lockhart wavefolder; rich even and odd harmonics with spectral nulls

Rectify

Waveform rectification for octave-up effects and harmonic doubling.

• Full Rectify — Full-wave rectification (absolute value) producing symmetric distortion with all harmonics
• Half Rectify — Half-wave rectification with asymmetric character and added sub-harmonic content

Digital

Lo-fi and bit-level destruction effects that embrace digital artifacts.

• Bitcrush — Bit depth reduction with optional dither for lo-fi quantization distortion
• Sample Reduce — Sample rate reduction (downsampling) that introduces aliasing and step-like artifacts
• Quantize — Amplitude quantization to stepped levels for digital staircase distortion
• Aliasing — Intentional aliasing with optional frequency shifting for harsh, metallic, inharmonic tones
• Bitwise Mangler — Bit rotation and XOR operations directly on sample data for glitchy, noise-like textures

Dynamic

Time-varying distortion that responds to signal dynamics.

• Temporal — Envelope follower–controlled distortion where saturation intensity responds to input level and dynamics

Hybrid

Combinations of different distortion approaches blended together.

• Ring Saturation — Ring modulation blended with saturation for metallic, inharmonic overtones combined with warmth
• Feedback — Feedback loop–based distortion with a configurable internal filter for resonant, self-modulating tones
• Allpass Resonant — Cascaded allpass filters with saturation and feedback, producing resonant peaks and phase-warped ringing

Experimental

Novel distortion approaches using granular, spectral, and mathematical techniques.

• Chaos — Chaotic attractor waveshaping using mathematical models (Lorenz, Rössler, Chua, Hénon) for complex, unpredictable timbres
• Formant — Formant filtering combined with distortion; shapes the signal through vowel-like resonant peaks for speech-like character
• Granular — Granular distortion that processes the signal in small, windowed grains for cloud-like, micro-timbral textures
• Spectral — FFT-domain distortion applied per frequency bin; modes include per-bin saturation, magnitude processing, bin-selective distortion, and spectral bitcrushing
• Fractal — Iterative, self-similar distortion with recursive structure and controllable depth for evolving harmonic complexity
• Stochastic — Noise-modulated distortion with random jitter for probabilistic, shimmering, diffuse textures