Apple MainStage 3 Instruments - MainStage 3 Instruments
Apple MainStage 3 Instruments - MainStage 3 Instruments
Apple MainStage 3 Instruments - MainStage 3 Instruments
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
EVOC 20 PolySynth modulation parameters<br />
The Modulation section contains two LFOs that can either run freely or be synchronized with the<br />
host application tempo.<br />
••<br />
The Pitch LFO controls pitch modulation of the oscillators, enabling you to produce<br />
vibrato effects.<br />
••<br />
The Shift LFO controls the Formant Shift parameter of the synthesis filter bank, enabling you<br />
to produce dynamic phasing-like effects.<br />
Modulation parameters<br />
••<br />
Int via Whl slider: Drag to set the intensity of LFO pitch modulation. The right half of the slider<br />
determines the intensity when the modulation wheel is set to its maximum value; the left<br />
half determines the intensity when the wheel is set to its minimum value. By dragging the<br />
area between the two slider segments, you can simultaneously move both. This parameter<br />
is permanently assigned to the modulation wheel of your MIDI keyboard, or corresponding<br />
MIDI data.<br />
••<br />
Rate knobs: Rotate to set the speed of modulation. Values to the left (of the centered position)<br />
are synchronized with the host application tempo. These include bar values, triplet values, and<br />
so on. Values to the right (of the centered position) are nonsynchronized, and are displayed in<br />
Hertz—cycles per second.<br />
Note: The ability to use synchronous bar values could be used to perform a formant shift<br />
every four bars on a cycled one-bar percussion part, for example. Alternatively, you could<br />
perform the same formant shift on every eighth-note triplet within the same part. Either<br />
method can generate interesting results and lead to new ideas, or add life to existing<br />
audio material.<br />
••<br />
Waveform buttons: Click to set the waveform type used by the Pitch LFO (left column) or the<br />
Shift LFO (right column). You can choose from the following waveforms for each LFO:<br />
••<br />
Triangle<br />
••<br />
Falling and rising sawtooth<br />
••<br />
Square up and down around zero (bipolar, good for trills)<br />
••<br />
Square up from zero (unipolar, good for changing between two definable pitches)<br />
••<br />
Random stepped waveform (S & H)<br />
••<br />
Smoothed random waveform<br />
••<br />
Intensity slider: Drag to define the amount of formant shift modulation by the Shift LFO.<br />
Chapter 8 EVOC 20 PolySynth 151