ARP 2600 - Page 73

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5.112
VOLTAGE CONTROLLING
THE
VOLTAGE
CONTROLLED
FILTER.
Follow pretty
much
the
same
sequence
as you
did with the
VCA. If you
begin with
the
VC02 sine wave
you won't
need
to
use
a
patch
cord;
it's
prewired
to
one
of
the
VCF
control inputs.
Your
best bet
for
an
input
signal
is
to
use
the
noise generator.
A com-
plete
statement of the patch might
go
like this: NG-Filter input
open, VCF-Mixer
input open,
all other input
attenuators
closed.
This
is
the signal path. The control
path
is
provided
simply
by
open-
ing partially
the
VC02~Filter
control input (not the
VC02-Fjiter
signal
input
).
And
the
control
settings are:
NG
color control
cen-
tered, output level
%
open;
VCF initial
frequency
500Hz, resonance
minimum;
VC02,
your control-voltage source,
in
its
low-frequency
range with frequency sliders
centered.
Initial
Filter
Frequency
out