ILL SEA MANUALS / springs

Illthy Springsspring / FDN / IR reverb with Freeze

VST3 modulein the NoAMP zip

Three reverbs in one box: the drippy chirp of a real spring tank, a lush clean FDN hall, and a Convolution engine that loads any reverb IR you've got.

Controls

ControlWhat it does
EngineSpring (allpass, coprime-tuned, per-voice dispersion) · FDN (8-line hall) · Convolution (load an IR — auto-leveled so it sits IN the mix instead of acting like a cab).
Amount / DecayDry/wet crossfade and tail length.
Pre-delay0–120 ms gap before the wet — keeps attacks articulate.
Low-cut / DampHigh-pass on the wet return; decay-dependent darkening (higher = darker).
FreezeFDN engine: latch what you just played, forever. MIDI-learnable.
Freeze LengthGrab (classic 450 ms smeared drone) · 1/4, 1/2 Note, 1 Bar (a MUSICAL loop synced to tempo — freeze on the downbeat and your phrase pulses in time) · 250 ms–2 s fixed. Changing length WHILE frozen re-cuts the same phrase.
IR LevelConvolution engine trim.

Specs, tersely

Springmulti-voice allpass network, coprime delay spread, per-voice detuned dispersion, decay-dependent damping
FDN8-line feedback delay network, 4 s freeze capture ring, unity-gain musical looping (no rest-blasting RMS tricks)
Convolutionpartitioned convolution, load-time RMS normalization + trim
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