X

Chapter 3 ES2 54
Control two lter parameters simultaneously
The ability to change the Cuto and Resonance controls at the same time is essential for creating
expressive synthesizer sounds.
m Drag one of the three chain symbols in the ES2 lter section.
Click here to
simultaneously adjust
the cutoff of both Filter 1
and Filter 2.
Click here to
simultaneously adjust
the cutoff and
resonance of Filter 2.
Click here to
simultaneously adjust
the cutoff and
resonance of Filter 1.
•
The chain between Cut and Res of Filter 1 controls both the resonance (drag horizontally) and
cuto frequency (drag vertically) simultaneously.
•
The chain between Cut and Res of Filter 2 controls both the resonance (drag horizontally) and
cuto frequency (drag vertically) simultaneously.
•
The chain between Filter 1 Cut and Filter 2 Cut controls the cuto frequency of Filter 1 (drag
vertically) and Filter 2 (drag horizontally) simultaneously.
Force ES2 lters to self-oscillate
If you increase the lter Resonance parameter to higher values, the lter begins to internally
feed back and, as a consequence, begins to self-oscillate. This results in a sine oscillation—a sine
wave—that is actually audible.
To start this type of oscillation, the lter requires a trigger. In an analog synthesizer, this trigger
can be the noise oor or the oscillator output. In the digital domain of the ES2, noise is all but
eliminated. Therefore, when the oscillators are muted there is no input signal routed to the lter.
Filter Reset provides a trigger signal that can be used to drive the lter to self-oscillate.
Use Filter Reset to drive the ES2 lters to self-oscillate
m Click the Filter Reset button to turn on.
When this button is engaged, each note starts with a trigger that makes the lter resonate/
self-oscillate immediately.