ESI ESI2000, Руководство по эксплуатации

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200
ESI Operation Manual
The Voltage Controlled Filter (VCF) submodule contains three pages.
Page one determines the filter, the filter’s initial cutoff frequency and Q
(resonance). Page two determines the effect of keyboard position on
cutoff frequency, and the extent to which the associated AHDSR enve-
lope affects the filter cutoff frequency (envelope amount). Page three sets
the VCF AHDSR envelope characteristics. These alter timbre with
respect to time.
1. Activate Dynamic Processing module.
2. Select VCF (3).
3. Move the cursor to the parameter(s) to be adjusted, and select
the desired value(s) with the Data Entry Control. The first page
reveals:
VCF
Type: 4 Pole Lowpass
Cutoff: 22049Hz
Q: 0%
• Type: selects the type of filter used. Refer to the Filter Background
section earlier in this chapter.
• VCF Cutoff: varies the filter cutoff frequency from 0 Hz to
22049Hz. Higher values correspond to higher filter cutoff
frequencies, hence a sound with more treble. The maximum filter
sweep range is most obvious with envelope amount set to +0.
• Q: varies the resonance from 0 to 100%. Higher values correspond
to increased resonance, which accentuates the frequency response at
the filter cutoff frequency. This produces a sharper, more whistling
sound.
4. Select page two by pressing the right cursor button. The second
page shows:
VCF
Tracking: +1.00
Envelope Amt: + 0%
• Tracking: varies the filter cutoff with respect to the note(s) being
played on the keyboard from -2.00 to +2.00. With 0.00 tracking, the
filter cutoff will not be affected by the keyboard pitch. With tracking
set to -2.00, the filter cutoff increases at one-quarter the rate at
which pitch increases. With tracking set to +2.00, the filter cutoff
increases at twice the rate at which pitch increases. Intermediate
values give intermediate degrees of tracking. With negative tracking,
a sample becomes progressively less bright as you play higher up in
the zone. This is useful with some bass sounds, and to even out
frequency response variations between samples when multi-
sampling.
3. VCF