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generators are “triggered” into action only when you press a key, the velocity
with which you play can be used to actually change key, the velocity with
which you play can be used to actually change the eective depth of the lter
and amplier envelopes as well as determine the peak level of either envelope,
and the Alternate Release footswitch is used to modify the release settings.
MIXER ENVELOPE
Referring for a moment to Figure 6-3, the most important mixer controller
is the mixer envelope. It serves the very interesting role of in eect moving
the joystick for you, very quickly. In fact, to program the mixer envelope, you
just move the joystick to the desired mix positions, and set the rate at which
the point will move between them. The main dierence between the mixer
envelope and the other mixer modulation sources is that the other sources
are onedimensional: they change one value at a time. The mixer envelope,
however, is two-dimensional: it supplies separate x and y coordinates so that
vectors can be drawn through the mixer plane, as shown in Figure 8-1.
When the key is pressed, the mixture moves from point 0 to point 1 at a
certain rate, called rate 1. Then it moves from points 1 to 2 at rate 2, and from
points 2 to 3 at rate 3. These three vectors can be used to dene the attack
timbre of the note. They are linear, in other words, within each segment the
rate of motion is constant.
While the key is held, the mixture point may remain at point 3. Or, by looping
the mixer envelope, you can continuously sweep through up to three dierent
vectors in the plane. In other words, the mixer point can oscillate between
point 3 through any previous segments.
Figure 8-1
MIXER ENVELOPE
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