pfilter is a free Windows VST that creates a steppy, gated effect, but using filter cut-off instead of volume to give a wider range of possibilities. It uses a variable state filter, triggered between 2 adjustable cut-off values by a tempo-sync’d probability-based step sequencer. An LFO can modulate the filter when triggered and trigger pulse length, attack and release can shape the sound

Features:

• tempo-sync step sequencer, with 2 to 32 steps over a sequence length of 2 to 32 beats
• can be programmed or random, by setting the probability of each step from 0-100%
• seeded randomisation for repeatable loops up to 100 beats long
• resonant variable filter, LP, HP, BP and notch
• filter triggered between upper and lower cut-off values, in either direction
• tempo sync LFO, with 6 waveforms and settings from 1/16 beat to 96 beats
• adjustable pulse length, attack and decay for shaping the modulation
• random swing for step sequencer
• wet/dry mix control
• midi CC and midi learn