10.6

Table Of Contents
570Logic Pro Instruments
Use Logic Pro Ultrabeat oscillator2 phase osc mode
The waveform of the phase oscillator can be reshaped into almost any basic synthesizer
waveform.
Oscillator2 operates in a nearly identical fashion to oscillator1 when in phase oscillator
mode. The key difference is that Saturation can be modulated in oscillator2, rather than
Asymmetry in oscillator1. This results in the production of different sounds when both
oscillators are in phase oscillator mode.
Phase oscillator parameters
Slope knob: Rotate to set the slope or steepness of the waveform. The higher the value,
the steeper the waveform. The resulting sound takes on an increasingly nasal character
as the incline becomes more vertical.
Saturation slider: Move to increase the gain, eventually causing the waveform to clip.
Higher values result in a distortion of the waveform shape, making it more rectangular.
This results in a corresponding increase in odd-numbered overtones.
Asym(metry) slider: Move to change the waveform angle. Higher values skew the
waveform toward a sawtooth wave. Asym can be modulated by the sources shown in the
mod and via pop-up menus, enabling dynamic sound changes at the oscillator level. See
Logic Pro Ultrabeat modulation overview.
Create classic waveforms with the Ultrabeat phase oscillator
The basic waveforms of classic analog synthesizers can be reproduced with the phase
oscillator:sine, rectangular, and sawtooth waves result from different Slope, Saturation,
and Asym parameter value combinations.
InLogic Pro, do one of the following:
To produce a classic square wave, set Slope and Saturation to their maximum values
and Asym to the minimum value.
To produce a sawtooth wave, set Slope to −0.20, Saturation to the minimum, and Asym
to the maximum value.
To produce a sine wave, set Slope, Saturation, and Asym to 0 values .
Logic Pro Ultrabeat waveform characteristics
The table provides an overview of the tonal qualities of each basic waveform.
Waveform Basic tone Comments
Rectangular Nasal sounding Great for reed instruments, synth
blips, basses
Square Hollow and woody sounding Useful for basses, clarinets, and
oboes. The pulse width of (oscillator
2 and 3) square waveforms can be
smoothly scaled between 50% and
the thinnest of pulses.
Sawtooth Warm and even Useful for strings, pads, bass, and
brass sounds