Alesis Fusion Tutorial page 26

ALESIS FUSION
However, strings (ensemble or solo) rarely sustain at full level and tend to swell and then fade
slowly to a sustain:
Woodwind tends to have an initial attack that is soft but has an initial 'burst' that settles down
quite quickly:
Pipe organs are similar as are many brass sounds.
Of course, the simplest envelope of all is the electric organ - on, full sustain and then off:
This envelope shape is also used on very simple synth sounds.
It is the envelope generator that allows us to create all these different shapes and more.
An envelope generator is typically equipped with four controls:
ATTACK
DECAY
SUSTAIN
RELEASE
Controllers
Sets the time it takes for the signal to reach full amplitude.
Sets the time it takes for the signal to die away to the sustain level.
Sets the level of the sustained portion of the sound (if any).
Sets the time it takes for the sound to die away after the note has finished and
you take your finger(s) off the key(s).
ANALOG SYNTHESIS TUTORIAL
TIME
TIME
TIME
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