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The Envelope Generator has two chan¬
nels, A and B, both with the same func¬
tion. Controls are provided for attack and
decay, and the selected envelope curve
can be used for modulating the VCF or the
VCA. Channel A or B may be selected by
a foot switch. It is impossible to use the
different envelopes for both the VCF and
the VCA. The LED indicates which chan¬
nel has been selected. When the power
source is turned ON, A is automatically
selected.
VCO VIBRATO
Next, let's try different ways of modulating
or controlling the VCO's. First is vibrato,
which is a slight wavering of pitch. Vibratos
can be produced in the normal bass guitar
way by using the finger to vary the tension
on the string, or it can be produced elec¬
tronically for a wide number of effects.
Set the VIB DEPTH (vibrato depth) knob
on the Bass Guitar at "10". This may or
may not produce the vibrato effect, if not,
touch the upper metal end (Touch Plate
A) of the divided pickup of the Bass guitar
to turn the vibrato effect ON. To turn it
OFF, touch the opposite end (Touch Plate
B) of the pickup. The vibrato will decay
slowly after releasing the touch plate.
With the vibrato ON, try various positions
for both the VIB DEPTH control on the
Bass Guitar and the LFO RATE (LFO = low
frequency oscillator) and the LFO DELAY
control on the Bass Guitar Synthesizer
and note the effects. VIB DEPTH controls
the depth of the vibrato effect and the LFO
RATE controls the speed of the vibrato.
The LFO DELAY control determines the
delay time of the delay vibrato.
20
o
VCAMC 30
INDICATOR
p
*3*
MODULATION
SWITCH
23—31
LFO(VIB)DEPTH
I
-TOUCH PLATE
/
Turns the VIBRATO
/
effect on.
-TOUCH PLATE
Turns VIBRATO effect
OFF, or for touch-Vibrato.
SLOW
FAST
Mirvj
MAX
RATE
DELAY
7
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