Chippmann CS-8 VCF1E, Руководство пользователя, Страница: 17 / 28

CS-8 Series VCF1E Rev1.2, Feb. 2018
-15-
Resonance-mode
With the
4-Position-rotary switch 8 (Reso-mode) different ways of feed backs
are selectable leading to different sound characters. Firstly, the three modes
"classic", "smooth" and "solid" shall be described. These three modes refer to
the filter operation (inner scale of "
Filter function
").
classic: This is the typical feedback mode commonly used in almost all 4-pole
filter designs. For low-passes arises a so-called "drop" in the pass-band without
any adopted measures, which means a signal gain drop of about -14 db as
shown in Fig. 6. The
drop here for the six selectable low-pass functions is
adjusted to about -2.1 db . The other functions are not affected by this effect.
Level [dB]
fc
Resonance
drop /
gain loss
Signal frequency
Lowpass-
Function
Fig. 6
smooth, solid:
These are two further ways of feedback, offered by this filter
design. Actually, there is no rule which describes homogeneous the sound
character for all filter functions. Meaning, the "solid" mode for the 24 db low-
pass could sound very smooth and restrained whereas it could sound in a
high-pass mode very loud and rigorous. So, all filter functions are to compare
with each resonance modes to find out the character. A drop doesn't exist in
these modes.
Phaser:
In this mode the complete filter will be switched into a real 4-stage-
Phaser, meaning the total structure is no longer that one of a 4-pole-filter. For
this mode the outer scale of the switch "
Filter function
" indicates the