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1-5
AMPLITUDE MODULATOR
(AM)
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AMPLITUDE
SENSITIVITY
Adjusts
intensity
tion
by
MG
1.
MODULATION
of
AM
modulo
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AM
SWITCH
On/off switch
for
AM.
fig.
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1-5
Amplitude Modulator (AM)
This
raises
and
lowers the
volume
in
a
cyclic
fashion
dependent on
the
output
signal
of the
modulation
generator (EM-1).
This
is
how
you
get
crcmclo
and
other
effects.
If
you want
tremelo,
note
that
if
you
turn
down
the
MG-1
frequency
knob
too
far,
the
speed of
the
effect
will
be too
slow
to
be
recognized
by
the average
brain.
On
the
other hand,
if
you
turn
up
the
MG-1
frequency too
high,
the pitch
of
the
sound
will
become
inconspicuous
in
the
face
of
the metallic "ring
modulator"
ef-
fect
that
you
produce.
Specifically,
if
you
turn the
AM
knob
to
"5",
modulation
is
100%;
if
you
turn
it
to
"10", modulation
is
200%
and
you've got
a
real
ring
modulator on your
hands.
Discover the difference
between
100%
and
200%
modulation by
turning the
MG-1
waveform knob
to
the
triangle
(A)
posi-
tion
and
the frequency
knob
to
about
3".
Then
turn
on
the
AM
switch
and
slowly
turn
up
the
AM
sensitivity
knob
from "1"
to
"10"
(while playing
something
on
the
keyboard).
You'll notice that the
frequency
(the
num-
ber of
cycles
of
volume
variation
per
sec-
ond) doubles
between "5"
and "10".
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