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37
Creating sounds
Creating sounds
fig.F-Env-sliders
On instruments such as piano, each note begins with a bright tone, and gradually darkens (becomes more
mellow) as the note decays.
The filter envelope lets you create time-varying tonal changes of this type.
fig.FilterEnv.e
A (attack time) slider
Specifies the time from when you press the key until the cutoff frequency reaches its highest (or lowest) point.
Moving the slider upward lengthens the time, and moving it downward shortens the time.
D (decay time) slider
Specifies the time from when the cutoff frequency reaches its highest (or lowest) point until it falls to the sustain
level.
Moving the slider upward lengthens the time, and moving it downward shortens the time.
S (sustain level) slider
Specifies the cutoff frequency that is to be maintained from when the attack time and decay time have elapsed
until you release the key.
Moving the slider upward raises the cutoff frequency (or lower it if the DEPTH is “-”).
R (release time) slider
Specifies the time from when you release the key until the cutoff frequency falls to its minimum level.
Moving the slider upward lengthens the time, and moving it downward shortens the time.
DEPTH slider
Specifies the direction and amount in which the cutoff frequency will change.
• Moving the slider upward (in the “+” direction) causes the cutoff frequency to change in the upward direction.
The higher you move the slider upward, the more the cutoff frequency will rise.
• Moving the slider downward (in the “-” direction) causes the cutoff frequency to change in the downward
direction. The lower you move the slider downward, the more the cutoff frequency will fall.
FILTER ENV (filter envelope) sliders
cutoff
frequency
AD
S
DEPTH
time
R
Key-off
Key-on
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