ADASR stands for Attack, Decay, Sustain, Release. It is a commonly used term in the field of audio synthesis and music production. ADASR refers to the envelope or contour of a sound, describing the way in which it changes over time.
The Attack phase represents the initial onset of a sound, often characterized by a fast and sharp rise in volume. It is the time it takes for a sound to reach its maximum level from its starting point. The Attack phase helps in shaping the overall character and impact of a sound, particularly in percussive or transient sounds.
The Decay phase follows the Attack phase and refers to the reduction in volume after the initial peak. It determines the speed at which the sound decreases in amplitude from its maximum level.
The Sustain phase is the period during which the sound is held at a steady level. It maintains a constant volume and sustains for a specific duration as long as the triggering event continues. The sustain level can be adjusted according to the desired characteristics of a sound.
The Release phase occurs after the triggering event ends or when the sound is released. It represents the gradual reduction in volume from the sustain level to silence. It determines how long it takes for the sound to fade out completely.
ADASR is an essential component in shaping the dynamics and evolution of a sound in electronic music production and sound design. It allows musicians and producers to create nuanced and expressive sounds by controlling the attack, decay, sustain, and release parameters.
