ESI ESI2000, Руководство по эксплуатации

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36
ESI Operation Manual
You could activate the Filter Setup function directly by keying in 3.
However, let’s investigate another way to select the filter function. Move
the Data Entry Control to catalog the various Dynamic Processing
functions. When the display shows function 3. VCF, press ENTER.
To Change the Filter Cutoff Frequency:
Increasing the cutoff frequency of a lowpass filter makes the sound
brighter, decreasing the frequency makes the sound duller.
1. Activate the Dynamic Processing module, select VCF (3), and
select the 4 Pole Lowpass filter. The display should look some-
thing like this:
VCF
Type: 4 Pole Lowpass
Cutoff: 861Hz
Q: 0%
Play with the up and down cursor buttons. Note how you can move the
cursor under the various parameters to be adjusted. For now, move the
cursor under the Cutoff frequency on line three.
2. Select the filter cutoff frequency. To do this, vary the Data Entry
Control. Note how the numbers to the right of cutoff change. Lower
numbers mean a lower filter cutoff frequency (less high frequencies).
Higher numbers mean a higher filter cutoff frequency (more high
frequencies). Observe how only the notes within the current zone
are affected by the Data Entry Control setting.
To Change Filter Q:
Increasing the Filter Q emphasizes the frequency at the cutoff point. See
the diagram on the previous page.
VCF
Type: 4 Pole Lowpass
Cutoff: 22049 Hz
Q: 0%
1. Move the cursor to the Q% on line four. Vary the Q using the
data entry control and note the sharpness of the sound chang-
ing.
Higher numbers give a sharper sound. Again, this affects only
the range of notes covered by the current zone. In order to really
hear the effect, set the Q at about 60 and proceed.
2. Move the cursor back to Cutoff on line three. Vary the data
entry control. Note how this produces a sort of wa-wa effect.
Remember, you have to re-trigger the key to hear the results of
changing the Q.
3. Set Cutoff to 200 Hz and Q to about 50. The range of notes
covered by the current zone should sound muted.
✱
Tip: Although we are changing the
sounds in the bank, the sounds on the disk
remain unchanged. This is because we
haven’t saved the bank to disk. You can fool
around with the bank sounds as much as
you want without having to worry about
altering the original sounds on the disk.