10.6

272Logic Pro Instruments
Note: Pulse width modulation is also available via the synchronized square wave of
oscillators 2 and 3. A modulation of the wave parameters of these two oscillators results
in a PWM when the synced square wave is selected.
Vector synthesis in Logic Pro ES2
This tutorial provides hints for Vector Envelope programming.
Familiarize yourself with the ES2 Vector Envelope
In the Vector Start setting, the “mix” of the oscillators is controlled by the Vector Envelope.
Each oscillator has been set to a different waveform.
• In Logic Pro, switch from the Router view to Vector view.
• In its basic (default) setting, the Vector Envelope has three envelope points. Point 1 is
the start point, point 2 the Sustain point, and point 3 is the target in the release phase.
By clicking the points, you can see that the mix is always set to 100% for oscillator1, in
the Triangle.
• Click point 2, and drag the pointer in the Triangle to oscillator2. You’ll hear a square
wave, instead of the oscillator1 sawtooth.
• Engage the Vector Envelope by switching the Solo Point parameter off. When it is
switched on, you hear only the selected point, with no dynamic modulation. When
Solo Point is switched off, you’ll hear the sound moving from saw to square, with every
triggered note.
• Alter the preset time of 498ms between points 1 and 2.
• While holding down Shift, click between points 1 and 2. A new point 2 is created, and
the point formerly known as point 2 becomes point 3. The total time span between point
1 and point 3 is divided into the times between points 1 and 2, and 2 and 3. The division
takes place at the click location. If you click at the exact midpoint, the new time spans
are equal.
• Click the newly created point 2, and then drag its corresponding pointer in the Triangle
to oscillator2.
• Click point 3, and drag its corresponding pointer in the Triangle to oscillator3. Listen to
the three oscillators morphing from sawtooth to square to a triangular wave at the final
Sustain point.
• Click point 4 (the end point) and drag its corresponding pointer in the Triangle to
oscillator1, if it’s not already there. Listen to how the sound returns to the oscillator1
sawtooth wave, following the release of the key.