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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

  • A ring modulator, which is fed by the output of oscillator 1 and a square wave from oscillator 2

  • Colored noise for oscillator 3. See Use the Logic Pro ES2 noise generator.

Oscillator synchronization and ring modulation allow for the creation of very complex and flexible harmonic spectra. The principles behind oscillator synchronization are described in SynchronizeLogic Pro ES2 oscillators. Ring modulation principles are described in Use ring modulation in Logic Pro ES2.

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