Patch of The Week: Stereo Gemini - Using a Dual Filter to create Stereo Effects

video upload by AJH Synth Official

"This week's patch shows how you can use the Gemini 2412 VCF (otherwise a twin or 2 filters) to create stereo panning effects, by using an LFO and 2 VCAs. It's easy to create stereo amplification or panning of a sound just by using a pair of VCAs in the same manner as detailed in this video, or just in post-processing, but where's the fun in that?? Actually filtering and shaping the sound in stereo, using two filters that can have completely unique settings, is much more sonically interesting, and offers a huge range of sound possibilities.
The Gemini 2412 is perfect for this kind of usage, as in addition to providing 2 completely independent SEM-style VCFs, it also has a very flexible mixer section allowing the two filters to be used and controlled together, in parallel or in series. With Low Pass, Band Pass, High Pass, and variable Lowpass-Highpass filtering modes, all selectable by a switch, and with individual outputs for LP, BP and HP - it provides almost limitless tone-shaping possibilities.

00:00 Intro
00:12 Overview
00:46 Setting up a stereo patch
02:43 Some patch examples
05:30 3-Way Modulation patches
08:31 Patch Sheet (Basic Setup)
08:46 Patch Sheet (3-way modulation)

Patch Sheet PDFs
Basic setup: https://kvisit.com/8AE/3fYG
3-Way modulation: https://kvisit.com/8AE/3vYG (Patch Notes duplicated further down the page)"