Kb Track - Moog MEMORYMOOG 345 Owner's And Service Manual

EMPHASIS
08CI1-LAT0R8
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FREQUENCY
PULSEWIDTH
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FREQUENCY PULSE WIDTH
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TRACK
• •
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CUTOFF EMPHASIS CONTOUR AMOUNT
700
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10SEC 2
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20
SEC
10 2
MSEC
20 SEC
ATTACK DECAY
SUSTAIN RELEASE
• •
•
•
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RETURN UNCONDITIONAL KEYBOARD
RELEASE
TO ZERO CONTOUR FOLLOW
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20 SEC
10 2
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ATTACK DECAY
SUSTAIN RELEASE
VOLTAGE CONTROLLED
AMPLIFIER
[
o
SEE
WHAT
EFFECT THE
EMPHASIS HAS ON THE
NOISE
SOURCE,
HOLD A LOW NOTE ON
THE KEYBOARD. TURN
THE EMPHASIS
CONTROL
UP SLOWLY.
WHEN
IT'S
UP PAST
5,
TRY
ROTATING
THE CUTOFF FREQUENCY CONTROL.
Notice
that
changing
the
CUTOFF
control
(8.2)
moves
the resonant peak
so that
it
sweeps through
the harmonics of
the
incoming waveform.
KB
TRACK
The two
KB
TRACK
switches
(8.1
)
route control voltage from
the keyboard
to the
CUTOFF
frequen-
cy of
the
FILTER. The
control voltage
is
added by
thirds.
Turning both
switches on
applies
maximum
keyboard
control voltage to the
CUTOFF.
The
keyboard
control voltage
is
always proportionate
to the
location of the note
you
Ye
playing
on
the keyboard:
i.e.,
a
low
note puts out
less
control voltage than
a
high note.
Experiment
with adding
different
amounts
of keyboard
voltage to the
filter, first
using
no
EMPHASIS.
Notice
that
when
you
turn the
CUTOFF
knob up beyond
0,
the
keyboard
voltage appears to
have
little
or
no
effect.
That's because
it is
effectively
opening
the
FILTER
all
the
way
up;
there's
no way
the
CUTOFF
can open any
farther for
it
to
have any
more
audible
effect.
An
interesting thing happens
when
you
apply the keyboard
voltage
in
the various
amounts
to
the
filter
if
you
have the
EMPHASIS
turned
up
past 7
-
so the
FILTER
is
oscillating.
You
can play
the
FIL-
TER
as
if it
were another
oscillator.
To
try
this,
put
the
EMPHASIS
up
to
1
0,
the
CUTOFF
on
0,
and
turn
ail
the
MIXER
level
controls
(7.0)
down
to
0.
That way,
you'll
only be
listening to the
FILTER.
o
PLAYING THE
FILTER
VARY
THE
AMOUNT
OF
KEYBOARD
IN
WITH THESE
SWITCHES.
MIXER
2—
—
8
^*\^
10
LEVEL
2—
B
^¥\"
IT 10
LEVEL
2
8
O'
10
LEVEL
2 8
10
NOISE
VOLTAGE CONTROLLED
FILTER
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EMPHASIS
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1MSEC
10 SEC 2
MSEC 20 SEC
10 2
MSEC
20 SEC
ATTACK
DECAY
SUSTAIN RELEASE
• •
•
•
-o-
-o-
-D- -D-
RETURN UNCONDITIONAL KEYBOARD
RELEASE
TO ZERO
CONTOUR FOLLOW
700
1
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1MSEC
10
SEC
2
MSEC
20
SEC
10
2
MSEC 20
SEC
ATTACK
DECAY SUSTAIN
RELEASE
[
VOLTAGE CONTROLLED
AMPLIFIER
[
PLAY A
SCALE
ON
THE
KEYBOARD TO HEAR
HOW
CHANGING THE
KEYBOARD CONTROL
VOLTAGE
ALTERS
THE INTONATION.
O
32