Attack, Decay, Sustain & Release

  1. Index
  2. Events

ADSR is an acronym that represents the four parts of a sound's envelope

Attack

Attack is the time taken for initial run-up of level from nil to peak, beginning when the key is pressed.

Attack

Decay

Decay is the time taken for the subsequent run down from the attack level to the designated sustain level.

Decay

Sustain

Sustain is the level during the main sequence of the sound's duration, until the key is released.

Sustain

Release

Release is the time taken for the level to decay from the sustain level to zero

Release