Use ES2 Vector Envelope points in Logic Pro for iPad

The Vector Envelope time axis runs from left to right.

Up to 16 points can be used on the time axis. Each point can control the gray dot positions of the Oscillator Mix pad and the Mod Pad.

The points are numbered sequentially, from left to right, along the time axis.

There are always at least three points: point 0 is the Start point, point 1 is defined as the Sustain point, and point 2 is the End point.

Any point can be declared the Sustain point. If a played note is held for a sufficient length of time and no loop is engaged, any envelope movement stops when the Sustain point is reached. The Sustain point value is maintained until the key is released—until the MIDI note-off command. See ES2 Vector Envelope solo and sustain.

Any point can be declared the Loop point. The looped area spans the time between the Sustain point and Loop point. In between these points you can create additional points that describe the movements of the control points (gray dots) in the Mod Pad and Oscillator Mix pad. See Use ES2 Vector Envelope loop controls.

The more Vector Envelope points you set, the more complex the movements that can be performed.

Select a Vector Envelope point

In Logic Pro ES2, do one of the following:

Rotate the Select Point knob to choose a point.
Tap the Select Point field and use the arrows or knob to choose a point. Tap Done to complete entry.
Tap the Select Point field and type a value from 0 to 15 in the numeric keypad. Tap Done to complete entry.
Once selected, you can edit the point.

Create a new Vector Envelope point

In Logic Pro ES2, use the Select Point knob to choose the point that precedes the point you wish to create.
Tap the Vec Env Actions pop-up menu and choose the Insert Point to the Right of Selected Point command.
A new point is created, and is automatically selected.
In cases where you create a new point between two existing points, the segment that previously existed is divided into two equal-sized segments. The sum of the two new segment times is equal to the time of the original undivided segment. This ensures that any points that follow retain their absolute time positions. Existing control point (gray dot) positions in the Oscillator Mix pad and Mod Pad are fixed, thus ensuring that newly created points don’t affect any previously defined movements.

Quickly create multiple Vector Envelope points

In Logic Pro ES2, tap the Vec Env Actions pop-up menu and choose either the Init to 8/8 Loop or Init to 16/16 Loop command.
Either 8 or 16 new points are created. The entire timeline is divided into segments of equal length.
WARNING: In cases where you have previously created several points, use of either command will overwrite your existing segments.

Delete a Vector Envelope point

In Logic Pro ES2, use the Select Point knob to choose the point that you wish to remove.
Tap the Vec Env Actions pop-up menu and choose the Delete Selected Point command.
In cases where you delete a point between two existing points, the segments that previously existed are combined. The sum of the two previous segment times is equal to the time of the new undivided segment.

Define a Vector Envelope point as the Sustain, Loop, or End point

In Logic Pro ES2, do any of the following:

Drag the Sustain Seg slider to the point value that you want to use as the sustain point.
Drag the Loop Seg slider to the point value that you want to use as the loop point.
Drag the End Segment slider to the point value that you want to use as the end point.

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Logic Pro User Guide for iPad