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Table Of Contents
Chapter 20 ES2 203
Oscillator Parameters
The following section describes the parameters that you can set individually for each
oscillator. You can find these parameters in the silver area to the right of the ES2 interface.
Muting Oscillators
By clicking on the green numbers to the right of the oscillators, you can mute and un-
mute them independently. This saves processor power.
Frequency Knobs
The Frequency knobs set the pitch in semitone steps over a range of ±3 octaves. As an
octave consists of 12 semitones, the ±12, 24, and 36 settings represent octaves. You can
click on these options to quickly set the corresponding octave.
The value display works as follows: the left numbers show the semitone (s) setting, the
right numbers show the cent (c, 1 cent = 1/100th semitone) setting. You can adjust these
two values independently. As an 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.
Note: The fifth (seven semitones), and all settings that correspond with harmonics of
an oscillator set to 0 semitones (19, 28 semitones) result in harmonic sounds.
Wave
Each of the three oscillators features a rotary knob that allows you to select a waveform.
This is responsible for the basic harmonic content and tone color of a sound. Oscillators 2
and 3 are almost identical to each other, but differ from Oscillator 1. Oscillator 1 is capable
of generating a sine wave, the frequency of which can be modulated in the audio range,
for true FM synthesis sounds. Oscillators 2 and 3 can be synchronized to, or be ring-
modulated with, Oscillator 1. They also feature rectangular waves with freely definable
fixed pulse widths plus pulse width modulation (PWM) facilities. Via the Router, the
rectangular and pulse waves of Oscillator 1 can be modulated in width in conjunction
with the synchronized and ring-modulated rectangular waves of Oscillators 2 and 3.
Note: The Filter button disables the entire filter section. This makes listening to the
pure oscillator waveforms easier.