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FAC Envolver is an envelope follower, this implies that it tracks the contour of the input signal and builds a corresponding envelope. Think of the envelope as the outline of the graphical representation of a rectified version of your input signal. By its very essence, it’s exactly what you get. But the process does not stop there and gives you the ability to modify the shape according to a set of provided parameters.
So it’s possible to define the rise and fall time as well as the depth of the envelope or also to invert it. Those parameters are the key to ensure the flexibility of the effect, and to meet the goal you are looking for.
The previous lines are more a general presentation of what an envelope follower does, but the particularity of FAC Envolver, which makes it an outstanding and versatile tool, is that it delivers the envelope via MIDI control change messages or commonly referred to as CC.
The key is to map the CC number parameter to the volume, cutoff, resonance control of your synthesizer or effect units. By doing so you will get instant additional hands to tweak your parameters automatically depending on what you are currently playing.
The internal signal path is built around two independant channels, having one envelope circuit detection per input signal. So the left input signal is wired to the envelope one, and the right input signal is wired to the envelope two.
FAC Envolver will breathe life into your sound, providing interesting natural modulation that will always be different by nature. Following the diagram below, the sound flows from the left to right or from the input to the output.
Output envelope 1 (L) and 2 (R)
As with all FAC products, the interface has a unique sober look and provides a great user experience. The value of each knob can be monitored at any time and two waveform viewers provide an accurate visual monitoring of the input signal levels layered with the output envelopes. The knobs are very responsive, natural and follow a specific curve according to the parameter type.
Envolver also comes with some factory presets to provide you a source of inspiration to satisfy your needs in any situation you might require.
The preset button provides common management features: loading, organization, and saving. The left and right arrows allow fast navigation short cut among all the presets (factory + user), a short press on the center label provides a detailed list of all the available presets, select the one you want to work with. On the other hand a long press (hold) provides contextual operation. For factory presets it's possible to save the current preset to a user preset, for user presets it's possible to rename, save and delete the current preset.
FAC Envolver - AUM (Routing CC1 to VCA Channel 1)
FAC Envolver - AUM (Routing CC4 to cutoff of Filtatron and CC2 to VCA Channel 2)
FAC Envolver - BM3