Assertion: amplitude | /r/CapableOf | decrease to a steady-state sustain level
Facets:
Source sentences:
text: As a very simple example (because there is usually much more going on in acoustic sounds), a note can have an initial attack characterized by the amount of time it takes to change from no sound to a maximum level, a decay phase, whereby the amplitude decreases to a steady-state sustain level, followed by a decay phase, characterized by the time it take the amplitude to change from the sustain level to 0.