ADSR
The ADSR generates a control envelope for modulating another process’s parameter. Its output is a scalar value, not an audio signal. This page describes version 2.
Trigger and Hold
- Trigger starts a one-shot attack–decay envelope: it rises to the peak and decays to zero. Sustain and Release do not extend this one-shot.
- Hold starts an attack–decay–sustain–release envelope when pressed: it rises, decays to Sustain, and stays there while held. Releasing Hold starts the Release stage.
Trigger and Hold can run together; the output takes the higher envelope value. The process emits the peak reached during each audio processing buffer so that a short envelope is not missed by the control output.
Stage controls
| Control | Free range | Default |
|---|---|---|
| Attack | 0–60 seconds | 0.01 seconds (10 ms) |
| Decay | 0–60 seconds | 0.25 seconds |
| Sustain | Level 0–1 | 0.5 |
| Release | 0–60 seconds | 0.25 seconds |
Attack, Decay and Release use the time chooser. Click their readout to choose a straight, dotted or triplet duration. A note value sets the stage’s length at the current tempo; it does not postpone a trigger until the next beat. Zero requests the fastest envelope stage rather than a negative or indefinite duration.
For a rhythmic gated modulation, connect the output to a gain or filter parameter, select synchronized Attack and Release times, and operate Hold. For a short one-shot modulation, use Trigger and set Attack and Decay.
Older saved processes
ADSR (old) remains separately registered for older scores. It retains plain second-based stage knobs and its previous defaults; it is not automatically migrated to the new chooser controls. Insert a current ADSR and explicitly copy the intended durations and connections when updating a score.