PolyShim

PolyShim is a multi-voice polyphonic shimmer with 3 independent voices: Sub (-1
Octave), Root, and Hi (+1 Octave), which transforms your bass into a soundscape
machine. The multi-voice architecture allows you to create a mix before routing it
into the polyphonic shimmer engine. The Sub voice adds low-end weight, while
the Hi voice brings high harmonics that cut through any mix.
The Decay knob sets the reverberation time, ranging from small room-style
reflections to cathedral decay. The Low-Pass (LPF) and High-Pass (HPF) filters
shape the shimmer tail, letting you make the processed sound darker or brighter.
Enabling Trails allows for a natural reverb fade-out when bypassing the effect. The
Mix control provides blending between the dry and processed signals.

Сontrols
Decay: 0.5 sec to +inf, depending on filters. 
Voices: Sub / Root / Hi Reverb
LPF: 10 Hz to 20 kHz Reverb
HPF: 10 Hz to 20 kHz
Mix: 0% to 100%
Level: -12 dB to +12 dB 
Trails: On / Off