ESI ESI2000, Руководство по эксплуатации

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38
ESI Operation Manual
VCF
Tracking: +1.00
Envelope Amt: 0%
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, reset the filter parameters to
their default settings. 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.
Changing the Volume Envelope with the 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 the Select Zone Submodule (0). 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 VCA function (2). The display shows:
VCA
Level: 100%
Pan: + 0%
L | R
3. Select the next page of the VCA controls with the right cursor.
Percussion
Piano
Organ
Strings
The generalized envelope shapes of a few
types of sounds are shown above.