Apple MainStage 3 Instruments - MainStage 3 Instruments

Modulate ES2’s Filter 2 Frequency
Filter 2 cutoff frequency can be modulated by the sine wave of oscillator 1, which is always
generated, even when the oscillator is switched off. The level of this sine signal can be mixed
in at the output stage with the Sine Level parameter (see Sine Level enhanced ES2 sounds on
page 58).
The effect of such filter modulations in the audio spectrum is unpredictable, but the results tend
to remain harmonic if you avoid high modulation intensity values. The FM parameter is used to
define the intensity of this filter frequency modulation.
Note: Don’t confuse this filter frequency modulation with the oscillator FM feature (oscillator 1
is modulated by oscillator 2). If oscillator 1 is frequency-modulated by oscillator 2, it does not
influence the sine wave signal used to modulate the cutoff frequencies. See Use frequency
modulation in ES2.
Filter 2 can also be driven to self-oscillation. If you set a very high resonance value, it produces a
sine wave. This self-oscillating sine wave distorts at the maximum resonance value. If you mute
all oscillators, you’ll only hear this sine oscillation. By modulating the cutoff frequency, you can
produce effects similar to those produced by modulating the frequency of oscillator 1 with
oscillator 2.
Modulate filter FM
1 Set up a modulation routing as follows: modulation target LPF FM.
A sine wave, at the frequency of oscillator 1, is always used as the modulation source. Given this
default assignment and the direct relationship between the filter FM intensity and oscillator 1’s
frequency, you can set up a second routing to modulate Oscillator 1’s pitch.
2 Set up a modulation routing as follows: modulation target Pitch 1, source LFO1.
3 Adjust LFO settings.
Chapter 3 ES2 57