k2k audio Parameters
| Parameter | Range | Default |
|---|---|---|
| Pan | -100.0 – 100.0 | 0.0 |
| Width | 0.0 – 200.0 | 100.0 |
| Gain | -12.0 – 12.0 | 0.0 |
| Distance | 1.0 – 100.0 | 10.0 |
| Speed | 0.0 – 100.0 | 0.0 |
| Dry/Wet | 0.0 – 1.0 | 1.0 |
Pan — Stereo position, −100 (hard left) to +100 (hard right), 0 = center. The taper depends on pan_law — at center, Equal sits ~3 dB louder than Linear, while Sin-Cos is the smoothest curve for moving sources. Mono input is split into a stereo pair; stereo input is repositioned in place.
Width — Mid/Side width amount, 0–200%. Only active when ms_enable is on. 0% collapses to mono (Side removed entirely), 100% leaves the stereo image untouched, 200% pushes the Sides up by +6 dB for an extra-wide image. Past ~150% on already-wide material can hollow out the center.
Gain — Output trim, ±12 dB. Sits after the spatial stage — useful to recover level lost when widening (M/S above 100%) or to cut headroom before the Doppler tail.
Distance — Distance for the Doppler model, 1–100 m. Only active when doppler_enable is on. Larger values = longer propagation delay → bigger pitch swing when speed changes. Think of it as how far the listener is from the source. Use small values (1–10 m) for subtle Doppler shimmer; large values for dramatic flyby effects.
Speed — Source motion speed for the Doppler model, 0–100 m/s. Only active when doppler_enable is on. Drives the rate-of-change of the propagation delay — that’s where the pitch shift comes from. 0 = stationary (no Doppler effect, even when toggle is on). Try modulating this with an LFO or envelope to get pass-by sweeps.
Dry/Wet — Equal-power blend between the dry input (0) and the processed stereo output (1). Node-specific (not part of the shared Spatial Lab params), so it is preserved when the same effect is hosted in a Player FX slot.
Additional controls
Pan Law — Center-position compensation curve:
- Equal — equal-power (−3 dB at center). Standard for music mixing; perceived loudness stays flat as you sweep.
- Linear — linear taper (−6 dB at center). Sums to unity in mono — use when downstream mono compatibility matters more than constant loudness.
- Sin-Cos — sine/cosine law (−3 dB at center but a smoother slope). Best for automated panning where you want the motion to feel continuous.
Ms Enable — Enables Mid/Side processing. When on, the width knob becomes active — the input is decoded to M/S, scaled, and re-encoded to L/R. When off, the node is a pure pan + gain stage and width is hidden.
Doppler Enable — Enables the Doppler delay-line model (distance + speed). When off, the spatial stage is purely positional (pan + width + gain). Toggle on for moving-source effects — note that automating distance or speed while the toggle is on is what produces the pitch shift, not the toggle itself.
About Spatial Lab
Spatial Lab is the workhorse mono → stereo positioner: pan with three classic laws, optional M/S width, optional Doppler for moving sources. The Doppler model is a real propagation-delay simulation, not a fake pitch shifter — it works by varying the delay line length over time, which is why distance and speed must change for any pitch effect to appear. For static placement, leave Doppler off and just use pan/width/gain. Output is dual-port stereo (Left/Right) — feed it into anything expecting an L/R pair, or sum the two ports back to mono if you only wanted the pan/width stage. Compare with Spatial Mix (two-source positional mixer) when you want to place two independent mono sources in the same field.
Generated 2026-05-05 from K2K_Dev@96730bdc by scripts/gen_lexique.py. Edit _intros/ or _overrides/, not this file.