ADSRenvelopen

ADSRenvelopen, which stands for Attack, Decay, Sustain, Release, is a fundamental concept in sound synthesis and digital audio processing. It describes how the amplitude of a sound changes over time after a note is triggered. The ADSR envelope is typically controlled by four parameters: Attack, Decay, Sustain, and Release.

The Attack phase determines how long it takes for the sound to reach its maximum amplitude after a key is pressed. A short attack creates a percussive or sharp sound, while a long attack results in a more gradual, swelling sound.

Decay refers to the time it takes for the sound's amplitude to decrease from its peak (after the attack) to the sustain level. This parameter controls the initial "fall-off" of the sound.

Sustain is the level at which the sound's amplitude is held constant as long as the key is being pressed. This can be a high level for sustained notes or a low level for sounds that fade quickly.

Finally, Release determines how long it takes for the sound's amplitude to fade to silence after the key is released. A short release creates a sudden cutoff, while a long release allows the sound to echo or ring out.

The ADSR envelope is a versatile tool used in synthesizers, samplers, and digital audio workstations to shape the dynamic character of sounds, influencing everything from the initial impact to the fading tail. Adjusting these four parameters allows for a wide range of sonic textures and articulations.