Apple MainStage 3 Instruments - MainStage 3 Instruments

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ADSR via Vel sliders: Drag to determine how note velocity affects modulation of the filter cutoff
frequency with the envelope generator. See ES1 envelope parameters overview on page 28.
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Filter Boost button (Extended Parameters area): Turn on to increase the output of the filter by
approximately 10 decibels. The filter input has a corresponding decrease of approximately 10
decibels, maintaining the overall level. This parameter is particularly useful when applying high
Resonance values. See Drive the ES1 filter to self-oscillate. (Click the disclosure triangle at the
lower left of the ES1 interface to access the Extended Parameters area.)
Drive the ES1 filter to self-oscillate
If you increase the filter Resonance parameter to higher values, the filter 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.
You can make the ES1 filter output a sine wave by following the steps below. This lets you play
the filter-generated sine wave with the keyboard.
Output a sine wave from the filter
1 Switch the Sub knob to Off.
2 Drag the Mix slider to the very bottom (Sub).
3 Drag the Resonance slider to the maximum position (full).
4 If you want, click the disclosure triangle at the lower left to open the extended parameters, then
click the Filter Boost button.
Filter Boost increases the output of the filter by approximately 10 decibels, making the selfoscillation
signal much louder.
Chapter 2 ES1 26