E-Mu ESI-32 Operation Manual page 46

Piano
Organ
Strings
Percussion
The generalized envelope shapes of a few
types of sounds are shown above.
38
ESI-32 Operation Manual
Tracking:
Envelope Amt:
3. Move the cursor to Envelope Amount and select -40% to invert
the envelope. The envelope effect is not all that noticeable when
you play a chord. This is because the envelope forces the cutoff
frequency in a negative direction. Since the cutoff frequency is
already fairly low, it can't go that much lower. Now go back to the
cutoff frequency and increase it. The effect will be far more notice-
able since there will be more range available for the negative going
envelope excursion.
If you feel like experimenting, play with the Tracking control to affect
the way the filter frequency tracks the keyboard pitch.
4. Before proceeding with the tour, set Cutoff Frequency to 22049,
Q to 00, Envelope Amount to +00, and Tracking to 1.00. Set the
Envelope Attack to 0.00s, Hold to 0.00s, Decay to 0.00s, Sustain
to 100%, and Release to 0.49s. After entering these values, press
ENTER to return to the Module Identifier.
Voltage Controlled Amplifier
The way the volume of a sound changes over time determines how we
perceive that sound. For example, a bell struck with a hammer is
instantly at full volume, then slowly dies away. A bowed violin sound
fades in more slowly and dies away slowly. Using the VCA envelope
generator, you can simulate different types of instrument volume enve-
lopes by programming them appropriately.
In preparation for the following experiments, let' s change the Current
Zone to include the entire keyboard.
1. Select Submodule 0. Select Zone. Move the data entry control to
the bottom of its travel and press ENTER. Now move the data
entry control to the top of its travel and press ENTER again. You
have now specified the entire keyboard as the current zone.
2. Select the 2. VCA function. The display shows:
Level:
Pan:
L
VCF
+1.00
0%
VCA
100%
+ 0%
| R