Two of my favorite free, rhythmic envelope shapers / trance gates and filter modulation plugins.
Powerful, sequenced rhythmic gate geared towards electronic music. From the developer:
Each section of step length buttons & step volume faders represents one beat of your pattern sequence. You can choose between ‘NoStep’, ‘ShortStep, ‘LongStep’ and ‘StepLink’ by simply pressing a step length button. Each beat consists of 4 steps (1/16 notes in ‘Normal Mode’) or 3 steps (1/8T notes in ‘Triplet Mode’) and each step has its own step volume fader above to dial in its relative level.
Free, automatable filter and volume envelope. From the developer:
Flux Mini is an audio effect that adds life, character and dynamism to your tracks. The customisable graph creates a shape which affects either the amplitude, low-pass filter or high-pass filter. You can emphasise the frequency modulation with the resonance knob too!
