What Is a Wavefolder?

A wavefolder is a type of waveshaper — it adds harmonics by “folding” the waveform back over itself when it hits certain voltage levels. Instead of clipping or distorting the signal, it bends it inward. The more you push the input, the more folds you get — and the wilder it sounds.

Wavefolders are most famously used in West Coast synthesis (hello, Buchla), often paired with sine or triangle waves to create complex, metallic, animated tones out of simple sources.

Why Use a Wavefolder?

• Harmonic Richness: It turns a dull sine into a growly, dynamic beast.
• Nonlinear Distortion: Unlike overdrive or fuzz, folding keeps things bright and zingy without totally crushing the signal.
• Timbre Control: Most folders have CV over fold depth, allowing you to animate the tone in wild ways.

Great Patch Ideas

• Feed it a sine wave → fold it → modulate the fold amount with an envelope = instant West Coast lead.
• Use an LFO into the folder → control the folding rhythmically for percussive textures.
• Combine with a filter *after* the folder to tame or emphasize certain harmonics.

Wavefolders are one of those modules that feel alive. They're less about “utility” and more about tone shaping and discovery — just twist the knob and see where it goes. Fold responsibly, or don’t.