10.6

223Logic Pro Instruments
Note: Osc Start soft and hard result in a constant output level of the initial oscillator phase
every time the sound is played back. This may be of importance when you use the Bounce
function of Logic Pro at close to maximum recording levels.
SynchronizeLogic Pro ES2oscillators
Typical oscillator sync sounds tend toward the aggressive, screaming leads that
synthesizer manufacturers like to talk about. The rectangular and sawtooth waveforms of
oscillators 2 and 3 feature a Sync option. When this parameter is turned on, the phase of
oscillator2 or 3 is synchronized with oscillator1.
Every time oscillator1 starts a new oscillation phase, the synchronized oscillator
(oscillator2 or 3) is also forced to restart its phase from the beginning. Between the
waveform cycles of oscillator1, the waveform cycles of the synchronized oscillators run
freely.
You can achieve interesting synchronized oscillator sounds by modulating the frequency
of the synchronized oscillator with an envelope generator. This constantly changes the
number of phases within a section of the synchronization cycle, resulting in corresponding
changes to the frequency spectrum.
Modulate the synchronized oscillator frequency with an envelope
1. In Logic Pro, set the oscillator 2 Wave knob to Sync.
2. Set up a modulation routing as follows:modulation target Pitch2, source Env2.
3. Adjust the settings of Envelope 2.