26 About the Filter Envelope
Sequential
9. The Filter Envelope’s release parameter acts in conjunction with the
Amplier Envelope (Envelope 2 by default), so to hear its effect, rst
set the Amp Envelope’s release value to a 1 o’clock position.
10. Now repeatedly strike a note on the keyboard as you turn the Filter
Envelope’s release knob clockwise and counterclockwise. Notice how
the note fades out faster or slower as you change the release value.
11. Continue experimenting with various Filter Envelope settings while
you adjust Envelope 1’s amount knob. Notice how greater amount
settings amplify the effect of the envelope on the lter.
As noted above, the Filter Envelope and Amplier Envelope often work
in conjunction, with the Filter Envelope controlling how the lter opens
and closes and the Amplier Envelope controlling how the Amplier
controls the overall volume shape of the sounds you create. To learn
more about the Amplier Envelope, see “About the Amp Envelope” on
page 27.
Envelope Parameters
Attack: Sets the attack time of the envelope. The higher the setting, the
slower the attack time and the longer it takes for the lter to open from
the level set with the lter cutoff knob to the level set by the lter enve-
lope amount. Percussive sounds typically have sharp (short) attacks.
Decay: Sets the decay time of the envelope. After a sound reaches the
lter frequency set at its attack stage, decay controls how quickly the
lter then transitions to the cutoff frequency set with the sustain knob.
The higher the setting, the longer the decay. Percussive sounds, such as
synth bass, typically have shorter decays (and a generous amount of low-
pass lter resonance).
Sustain: Sets the lter cutoff frequency for the sustained portion of the
sound. The sound will stay at this lter frequency for as long as a note is
held on the keyboard.
Release: Sets the release time of the envelope. This controls how
quickly the lter closes after a note is released.
Velocity On/Off: On, Off—Allows key velocity to inuence lter cutoff
frequency. If on, the harder you play, the more the lter will open and the
brighter the sound will be. If off, key velocity will not affect the lter.
This control allows for more touch-sensitive sounds.