Spectral Delay

Parameters

Base Delay Ms — Base delay time in milliseconds, 0–2000. The center delay around which per-bin variation happens. Short delays (10–50 ms) produce comb-filtering and slapback effects; medium (100–300 ms) feels like a regular delay; longer (500–2000 ms) is for spaced echoes.

Feedback — Delay feedback amount, 0–0.95. How much of the delayed signal is fed back into the delay input — controls how many repeats you hear. Low values (0–0.3) for one or two echoes; mid (0.4–0.6) for sustaining echoes; high (0.8–0.95) for nearly-infinite tails approaching self-oscillation.

Wet Dry Mix — Equal-power blend between dry (0) and the delayed signal (1). Labeled “Mix” in the UI as percentage.

Lfo Rate — LFO modulation rate in Hz, 0.01–20. The LFO modulates the per-bin delay times, creating chorusing and flanging-style effects within the delay structure. Slow rates (0.01–1 Hz) for slow morphing; medium (1–5 Hz) for chorus character; fast (5–20 Hz) for vibrato/FM-style modulation.

Lfo Depth — How much the LFO modulates the delay, 0–100%. 0 is no modulation (clean delay); higher values produce progressively more pitch-warbling movement. Combine with lfo_tilt to spread the modulation per frequency.

Delay Tilt — Per-frequency delay tilt, −1 to +1. The defining feature of this node: instead of one delay time for everything, delay_tilt spreads delay times across frequencies. Negative values delay highs more than lows (highs trail behind, basses lead). Positive values delay lows more than highs. 0 is uniform delay (equivalent to a regular delay). Use for swooping, sci-fi delay sweeps where the spectrum smears across the delay tail.

Lfo Tilt — Per-frequency LFO tilt, −1 to +1. Like delay_tilt but for the LFO depth — applies more modulation to highs (negative) or lows (positive). Used to make the LFO movement more dramatic in one part of the spectrum than another. Particularly nice for “shimmering tops, stable bass” delay characters.

Output Gain — Output level in dB, −24 to +12. Compensates for level changes from feedback and modulation.

Additional controls

Lfo Shape — LFO waveform. Sine — smooth modulation. Tri (triangle) — symmetric, slightly more angular. Saw+ — ramps up then snaps down (sweeps from short to long delay). Saw− — ramps down then snaps up (opposite direction). Sqr (square) — abrupt jumps between two delay values, gives a “click” character. S&H (sample and hold) — random stepped values, glitchy and unpredictable.

About Spectral Delay

A spectral delay applies a different delay time per frequency bin — unlike a normal delay where all frequencies arrive at the echo together, a spectral delay can stagger them. The result is a smearing, stretching, dispersive delay character that no time-domain delay can produce. With delay_tilt and lfo_tilt you can shape the per-frequency delay profile in real time, producing effects ranging from subtle shimmer-delay to extreme spectral dispersion (like a delay-line caught in a frequency-dependent reverberation field).

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