Apple MainStage 3 Instruments - MainStage 3 Instruments

ES1 amplifier envelope modulation
The AGateR, ADSR, and GateR buttons in the Amplifier section determine which of the ADSR
envelope controls affect the amplifier envelope. All ADSR parameters remain active for the filter.
The letters A, D, S, and R refer to the attack, decay, sustain, and release phases of the envelope
(see ES1 envelope parameters overview on page 28).
Gate refers to a control signal used in analog synthesizers that is sent to an envelope generator
when a key is pressed. As long as an analog synthesizer key is pressed, the gate signal maintains
a constant voltage. When Gate is used as a modulation source in the voltage-controlled amplifier
(instead of the envelope), it creates an organ-type envelope without any attack, decay, or release
phase—in other words, an even, sustained sound.
Amplifier Envelope
Selector buttons
The ES1 amplifier envelope selector buttons have the following effect on played notes:
••
AGateR: The Attack and Release sliders of the ADSR envelope control the attack and release
phases of the sound. In-between these phases, the Gate control signal is used to maintain a
constant level while a note is held. As soon as you release the key, the release phase begins.
The Decay and Sustain sliders of the ADSR Envelope have no impact on the sound’s level.
••
ADSR: The standard operating mode of most synthesizers, where the level of the sound over
time is controlled by the ADSR Envelope.
••
GateR: The Gate control signal is used to maintain a constant level while a note is held. As soon
as you release the key, the release phase begins. The Attack, Decay, and Sustain sliders of the
ADSR Envelope have no impact on the sound’s level.
Chapter 2 ES1 29