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eXpando is loosely inspired by the Oberheim Xpander, Matrix-6 and Matrix-12 family of instruments. Just borrows from their overall structure and feature set. Mostly missing the Tracking Generators, keyboard splits, etc. - just it's core synth voice elements:
- Two Oscs (with more flexible waveform selection, blending, funamental boost/cut, and 'internal' FM).
- Multimode Filter.
- Dual VCAs.
- Five LFOs, plus dedicated Vibrato LFO (with individual Wheel sensitivity for Speed and Amplitude).
- Five freely-assignable Envelope Generators with Triggers and Delay.
- Lag Generator.
- Four Ramp Generators with selectable Triggers.
- 20-slot Modulation Matrix.
This does NOT emulate or model the actual sound of any Oberheim or any other vintage hardware synth, just borrows from the design, controls and features of the Xpander/Matrix.
32-bit, so will require jBridge, etc., (or a DAW that will bridge) for use on 64-bit systems.
The link on the website is to a Sync.com folder that also contains the .osm Synthmaker source 'schematics', so anyone with SM, or it's successor Flowstone, can alter it to suit. It's hoped that anyone who makes significant improvements will share the result with everyone.
As this was originally built for my own use only, there are no presets included; I wanted to come at the instrument anew each time, as one did with vintage analog hardware.