Drag-and-drop modulation slots

One of the best features of FabFilter Twin is undoubtedly the ability to set up modulation connections with drag-and-drop. There is no need to search through long drop-down menus containing dozens of sources and targets or to find your way in cluttered and obscure matrix views. Just drag modulation sources to any target to fill Twin's modulation slots. Because of this intuitive way of making modulation connections, sound designing becomes fun, easy and, above all, fast. So how does it work?

Grab a source...	... then drag it...	... and drop it on a target
First, grab the source (the source icon actually) that you would like to use as a modulation signal, for example LFO 2. The moment you click on the source icon, the interface dims and the knobs of all modulatable parameters are highlighted.	The moment you start dragging, you will see a line going from the source to the <source> setting of the modulation slot that will be filled, and a line going from the <target> setting to the icon you are dragging.	Now drop the icon on the highlighted knob for the parameter that you would like to modulate, for example the panning of Oscillator 2. That is all there is to it!

Modulation sources are: LFO 1, LFO 2, LFO 2, EG Main, EG 1, EG 2, Velocity, Keyboard track, Modulation wheel, Pitch bend, and Aftertouch.

View current connections

To view the current connections for a specific modulation source or modulation target, just double click the source button or the target knob. The interface will dim and the current modulation connections will be highlighted. The interface will turn back to normal again when you move the mouse pointer away from the knob or source button.

Also, at any time, the source icons of modulation sources that are in use are highlighted, so you can see what kind of modulation is used the moment you load a preset.

Order your slots

At all times, you can re-order the modulation slots. Just grab a slot at the little round button at the top of each slot, and drag it to a new position. Drag the slots to the left or right outside the user interface to move them to a different slot bank.

Tips

• You can also modulate the level knobs of other slots, which allows you to create very complex patches. For example, to set up basic mod wheel behavior, drag LFO 1 to Master Tune, but set its slot level to 0, so by default there is no modulation. Next, drag the Mod Wheel source to the level knob of the slot that was just filled. You can now set the level of master tune modulation with the mod wheel!
• With the additional controls on each slot, you can invert the slot, temporarily disable it, and make it empty again. Empty slots appear dimmed and are candidates to be filled by the next drag-and-drop action.
• You have 24 slots at your disposal, although only eight of them are visible at a time. Use the A, B, C buttons at the far right just above the modulation slots to switch between banks.
• Although you can modulate almost any parameter with any source, some connections are not possible because they would introduce infinite loops. The basic rule is that an envelope generator or LFO cannot modulate its own parameters (because it would need its own output to calculate its output). When you make such a connection, a warning sign will appear in the slot and the slot will be ignored when producing audio.

Next: Polyphony and unison

See Also
Envelope generators
LFOs
Other modulation sources
Overview