MIDI CC/Notes from audio (or pattern) + Noise/Trance Gate Fx

Being a MIDI effect in its essence, controlling your synthesizers parameters (e.g volume, cutoff, res) with MIDI CC and notes, FAC Envolver is also able to transform the input audio via two exclusive effects: a Noise Gate and a Trance Gate. This combination is the key to breathe life into your sound, providing interesting natural modulation and sequences that will always be different by nature.

Under the hood, FAC Envolver is an envelope follower delivering MIDI data generated from the contour of a signal. The source of this signal may come from two distinctive circuits: the first one is a classic envelope follower and the second one is a rythmical pattern called trigger gate. Both circuits are responsible for providing a signal envelope that can be altered by a set of parameters and delivered as MIDI control change messages (CC).

The generated signal envelope also passes through a gate detection mechanism driven by a threshold. When the signal goes above the threshold, the gate is open and when the signal goes below, the gate is closed. This open/close sequence provides a second envelope which is delivered as MIDI CC (on/off) and notes. The pitch of the note may be set within the effect or from an external value provided by MIDI input. Both may follow a particular scale progression.

The envelope follower circuit also provides a noise gate to control precisely the level of your audio signal. This uses the same open/close sequence built by the gate detection mechanism that delivers MIDI data but acts on the audio. Following the same logic, when the second circuit - the trigger gate - is engaged, the open/close sequence provides a trance gate style effect to the audio.

FAC Envolver is a stereo effect and provides two slots, one slot per channel. Both can be linked to facilitate the manipulation. The audio can also be turned to mono and the dry and wet audio can be mixed.

Following the diagram below, the sound flows from the left to the right or from the input to the output.

Input Dry/Wet mix signal control Gain (up to 15db) Use it carefully Circuit Type: Follower or Trigger Gate Noise Gate - on/off toggle Noise Gate Curve - filter to smooth artifacts Trigger Gate Resolution - length of one step in the pattern Trigger Gate Pattern - 10x buit-in patterns, each contains 16 steps	Slots 1 (L) and 2 (R) Mute - left buttons (|1/ or |2/) are toggleable (gray muted/yellow activated) Rise - defines the time the envelope takes to rise. Set to minimum to catch the transient Fall - defines the time the envelope takes to fall. Set to maximum for more slew between peaks Depth/Bias - "depth" provides attenuation or amplification of the envelope (Follower) and "bias" adds a bias to the envelope (Trigger Gate) Threshold - sets the level at which the gate detector starts working	Multi-waveform graph - input signal, env contour, gate signal and threshold. Invert - inverts the envelope Hysteresis - amount of hysteresis applied to the gate detector
General Stereo signal to mono toggle Link option to apply same parameters values to each slot MIDI Mapping Env CC# - the number and the channel of the MIDI control change message where the envelope signal is sent Gate CC# - the number and the channel of the MIDI control change message where the gate signal is sent Gate Note Source - defines wether the pitch of the MIDI note messages, generated from the gate signal and delivered to the MIDI output, comes from the fx itself or from an external MIDI input (Only if the host you use supports music effect) Gate Note Transpose - offset applied to the current pitch Gate Note Play - if a scale is selected, this defines the progression within the scale: Up/Down/UpDown/Random. Every time a note is generated from the gate signal the progression goes a step forward/backward regarding the option selected Gate Note Scale - provides a set of fixed scales, select "No Scale" to always play the same pitch

Note: The MIDI/AUDIO combo makes FAC Envolver usable in every host, even the ones that still do not provide MIDI out support, in this case the MIDI generator is disabled and the fx can be used as a standard AUDIO fx.

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.

Preset Management

FAC Envolver also comes with 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 shortcuts 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.

The provided factory presets are organised by the following categories: