A single-voice chorus with a feedback path. A modulated delay line (base Delay 20–50 ms) is swept by a low-frequency modulator whose speed is set by Rate and whose excursion is set by Depth, with Skew shaping the up/down symmetry of the sweep. A Modulation selector chooses the sweep shape — Sine, Triangular, Log (symmetric), Square, Log (asymmetric), Random (uniform) or Random (telegraph). Feedback recirculates the delayed signal to thicken and resonate the effect, Mix blends dry and wet, and Output trims the final level.
Each sample-frame the modulator advances one step and sets the read position in the delay buffer; the delayed sample plus its scaled feedback is mixed with the dry input and sent out. Feeding the delayed output back into the same line is exactly the kind of per-sample feedback loop that only stays correct when the whole path is evaluated one sample at a time, which is why WaveWarp runs sample by sample.
