Rate
Experimental phaser sweep speed.
- Turn up Faster sweeps.
- Turn down Slower sweeps.
Pedals / Experimental phaser *(standalone only)*
Phase Lab
Experimental phaser *(standalone only)* · play-tested
seth — fish
seth@ninevolt:~$
Knobs
In the TUI each knob runs from low (left / 0%) to high (right / 100%). Start near noon, then nudge while you play.
Depth
How deep the experimental sweep goes.
- Turn up More extreme phase motion.
- Turn down Gentler phase color.
Inspired by
Not a commercial pedal — Ninevolt’s experimental phaser for sound design: four second-order (biquad) all-pass stages at staggered cutoffs, fast triangle LFO, and always-on high feedback. Louder and more aggressive than Ninety Orange (Phase 90 clone) or Purple Depth (Uni-Vibe).
Standalone only today — not wired into embedded ninevolt chain profiles (see LIBRARY.md).
Phaser family: see PHASER_MOD_COMPARISON.md.
Signal path
| Step | What it does |
|---|---|
| Triangle LFO Rate | Rate → 0.2–8.7 Hz — faster sweep than Phase 90. |
| Log-swept base fc | Triangle maps 80 Hz–(2800 + Depth×3500) Hz; Depth widens the top of the sweep. |
| Feedback regen | 0.68 + Depth × 0.28 (max ~0.97) — always resonant; no “Script” zero-feedback mode. |
| 4× biquad APF stages | Second-order all-pass @ 0.50, 0.72, 1.0, 1.38× base fc (Q ≈ 0.55) — spread notches. |
| Parallel wet mix | input + wet × (0.55 + Depth × 0.45) — wet-heavy; can exceed unity when in-phase. |
| Output | Clamped ±1. |
How we modeled it
Superset phaser for sound design: biquad stages give sharper notch motion in the guitar band than first-order Phase 90 math; staggered ratios avoid notches stacking at one frequency; high regen + wet-heavy parallel mix = synth-like sweeps. Depth is the main “intensity” knob (sweep top, feedback, wet gain).
Hold chords — short plucks sound like EQ tint.
Simplifications
- Fixed 4 stages — no runtime stage count - Mono only - No Mix knob separate from Depth-driven wet gain - Not component-matched to any commercial unit