26 Loudness Envelope
Dave Smith Instruments
Attack:
Sets the attack time of the envelope. The higher the setting, the
slower the attack time and the longer it takes for a sound to reach its full
volume. Pads typically have softer (longer) attacks. Percussive sounds
have sharper (shorter) attacks.
Decay:
Sets the decay time of the envelope. After a sound reaches its full
volume at its attack stage,
decay
controls how quickly the sound transi-
tions to the level set with the
sustain
control. The higher the setting, the
longer the decay. Percussive sounds, such as synth bass, typically have
shorter decays.
Sustain:
Sets the sustain level of the envelope. The higher the setting,
the louder the sustained portion of the sound will be. The sound will stay
at this level for as long as a note is held on the keyboard.
Release:
Sets the release time of the envelope. This controls how
quickly a sound dies out after a note is released.
Amount:
Sets the amount of modulation from the Loudness Envelope to
the VCA. In most cases you will probably want to set this fully clockwise
for maximum VCA volume. If you experience signal clipping, try reduc-
ing the
env
amount
or the levels of the oscillators in the
mixer
section.
To recreate the “gated VCA” effect used on certain classic rock anthems,
choose an organ sound, then set the
loudness
envelope
amount to zero, route the LFO
square wave to
amp
with an
initial
amt
setting of 100% and hold a few chords.
Velocity:
This button enables keyboard velocity to modulate the Loud-
ness Envelope amount. The harder you play, the more the Loudness
Envelope is affected. This makes for more touch-sensitive sounds.
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