Time Warp

Parameters

Warp Speed — Time-stretch factor in Relative mode, 0.1× to 4×. 1× is no change. Below 1 stretches the audio (0.5 = half speed, twice as long); above 1 compresses (2 = double speed, half as long). Animatable for time-varying speed effects (rubato, accelerando, ramping). The x suffix in the display reads as multiplier (e.g. 0.5x = half speed).

Additional controls

Mode — Time mapping strategy:

• Relative — uses warp_speed as a uniform multiplier. Standard time-stretching with a single speed factor.
• Absolute — maps source time to output time via an envelope (the curve is set in the parameter panel below). Allows non-linear time mapping: stretch one section, compress another, or completely reorder time. Speed knob is hidden because absolute mode uses the envelope curve directly.

Preserve Duration — When on, the output duration matches the input duration regardless of warp speed — the time flow is warped (some sections faster, some slower) but the total output length stays the same. When off, the output gets shorter (compressed) or longer (stretched) according to the warp settings. Use on for rhythmic warping that fits a fixed time slot; off for actual time-stretching where you want the output to be a different duration than the input.

Phase Strategy — Same as in Time Quantize — controls how spectral data is shifted in time:

• Direct — direct complex copy; cleanest for short shifts.
• Source — phase-preserved source copy.
• OLA — overlap-add windowed crossfading; smoothest for medium shifts.
• Vocoder — phase-vocoder reconstruction; highest quality on tonal/sustained material but most CPU.

For musical content, Vocoder is usually best (especially for non-trivial speed factors).

Crossfade Frames — In Direct and OLA strategies: STFT frames used for crossfading, 1–16. Higher values smoother but slightly blurrier on transients.

About Time Warp

Time Warp is non-linear time-stretching. Relative mode is straightforward time-stretch (input × speed = output duration). Absolute mode uses an envelope curve to define a time-mapping function — the X axis is source time, the Y axis is output time. Drawing the curve lets you create rubato effects, dramatic pauses-and-rushes, or completely reorder time within a clip. Pair with preserve_duration to keep total length unchanged while reshaping internal time flow — useful for rhythmically retiming a phrase to fit a specific bar count without changing total duration. The phase strategy choice matters most on long stretches and on tonal material.

Generated 2026-05-05 from K2K_Dev@96730bdc by scripts/gen_lexique.py. Edit _intros/ or _overrides/, not this file.