10.6

Table Of Contents
216Logic Pro Instruments
Oscillator parameters
Oscillator on/off buttons: Click the number to the right of each oscillator to
independently turn each on or off. A green numeric button indicates an active oscillator.
A gray numeric button denotes an inactive oscillator. Deactivating an oscillator saves
computer processing power.
Wave knobs: Choose the waveform that an oscillator generates. The waveform is
responsible for the basic tonal color. See Logic Pro ES2 basic oscillator waveforms.
Coarse Frequency knobs: Set the oscillator pitch, in semitone steps, over a range of
±3octaves. Because an octave consists of 12semitones, the ±12, 24, and 36 settings
represent octaves.
Fine Frequency value fields: Fine-tune the oscillator frequency (pitch). The left
numbers show the semitone s setting, and the right numbers show the cent c setting
(1cent=1/100th semitone). For example, an oscillator with the value 12s 30c sounds
an octave (12semitones) and 30cents higher than an oscillator with the value 0s 0c.
Drag vertically to adjust each value.
Oscillator Mix (Triangle): Move the pointer in the Triangle to crossfade (set the level
relationships) among the three oscillators. See Balance Logic Pro ES2 oscillator levels.
Logic Pro ES2 basic oscillator waveforms
All ES2oscillators output a number of standard waveforms—sine, pulse, rectangular,
sawtooth, and triangular waves—or, alternately, any of 100 Digiwaves (see Use Logic Pro
ES2 Digiwaves). The table outlines the basic waveforms.
Waveform Basic tone Comments
Pulse/Rectangular Nasal sounding Great for reed instruments, synth
blips, and 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
Triangle Sweet sounding, softer than
sawtooth
Useful for flutes and pad sounds
Sine A pure tone The sine wave of oscillator1 can be
frequency modulated by oscillator2.
This kind of modulation forms the
basis of FMsynthesis (see Use
frequency modulation in Logic Pro
ES2).
Oscillators 2 and 3 also offer the selection of:
A rectangular wave, synchronized to oscillator1
A sawtooth wave, synchronized to oscillator1