ADSR is an acronym that stands
for Attack, Decay,
Sustain, Release and is a means
to replicate those respective elements of a sound.
The envelope is a form of
automation (automatic movement) built into synthesizers to control the value
of a parameter (usually volume or filter cutoff frequency) over time.
Envelopes are critical for giving synthesizers a more natural and interesting
sound, as they can be used to simulate the volume envelopes of a real
instrument. However, envelopes are also great for creating special effects.
The most common type of envelope is called ADSR (Attack, Decay,
Sustain, Release), referring to the different functions of each part of the envelope.
ADSR Envelope elements:
- Attack determines the time it takes for the note to get to the maximum
- Decay determines the time it takes for the note to go from the maximum
level to the sustain level (controlled by Sustain).
- Sustain determines level the sound is played at while the note is held
(after the other envelope states, Attack and Decay, have been completed).
- Release determines the time it takes for the note to fall from the sustain
level to zero (silence) level when it is released.
Audio Unit (AU .component) + VST for Mac OS X Magnus
Choir Mac OS X
NKI Sample Library for NI Kontakt
Magnus Choir Apple Logic EXS24 Samples