10.6

Table Of Contents
589Logic Pro Instruments
LFO parameters
The parameters for both Ultrabeat LFOs are described below. You can adjust LFO1 and
LFO2 independently of each other.
LFO1/2 buttons: Select the corresponding LFO, allowing independent parameter
adjustments.
On/off button: Turn the selected LFO on or off.
Sync/free buttons: The LFO speed can be synchronized with the Logic Pro tempo or set
independently. Click either button to activate the corresponding mode.
Rate knob and field: Rotate to set the speed of the LFO. Depending on the Sync/
Free setting, the rate is displayed in hertz or rhythmic values—the latter when tempo
synchronization is active. Rates range from speeds of 1/64 notes to a periodic duration
of 32 bars. Triplet and punctuated values are also available.
Waveform shape slider: Drag to determine the shape of the LFO waveform. The shape
updates in the display.
Cycles knob and field: Rotate to set the number of times the LFO waveform repeats.
Ramp knob and field: Rotate to set the time it takes for the LFO modulation to fade in or
fade out. The Ramp value is displayed in milliseconds.
Rotate Ramp to the right to set the LFO fade-in time.
Rotate Ramp to the left to set the LFO fade-out time.
At the middle position, Ramp has no effect on the LFO.
Set Ultrabeat LFO waveforms
In Logic Pro, drag the Waveform Shape slider from left to right to morph the waveform
from a triangle, to a sawtooth, sine, square, and finally a rectangular wave shape—
including all variations in between. At the far right position, the LFO produces random
waveforms.
The graphical display shows the current LFO waveform shape.
The table outlines how different waveform shapes can affect your sounds. Intermediate
waveform shapes result in hybrid waveforms and hybrid behaviors.
Waveform Comments
Triangle Well suited for vibrato effects
Sawtooth Well suited for helicopter and space gun sounds.
Intense modulations of oscillator pitch with a sawtooth
wave lead to “bubbling” sounds. Intense sawtooth
modulations of lowpass filter cutoff and resonance
create rhythmic effects.
Sine Ideal for smooth, even modulations. Its position on the
Waveform Shape slider enables you to smoothly morph
between sawtooth and square/rectangular waves.