A flanger built from a short delay line whose length is swept by a low-frequency oscillator, then mixed back with the dry signal to create the classic moving comb-filter sweep. Delay sets the base delay time, Rate the sweep speed, Depth how far the delay is modulated, and Skew reshapes the sweep of the asymmetric modulation shapes. A Modulation selector chooses the LFO shape — Sine, Triangular, Log (symmetric), Square, Log (asymmetric), Random (uniform) or Random (telegraph) — while Mix blends dry and wet and Output trims the final level in dB. It takes one audio input and one audio output, in mono or stereo.
The chosen modulation shape is precomputed into a wavetable and scanned at Rate to sweep the read tap of a circular delay buffer; the variable delay is read with linear interpolation for smooth, click-free sweeps, then combined with the dry signal per the Mix and Output settings. Each channel advances exactly one sample-frame per tick, in step with WaveWarp's sample-per-sample engine.