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Oberheim Matrix-12 User Manual

Oberheim Matrix-12
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4.
Assign
PED
2
as
the
Modulation
Source.
Set
its
VALUE
X
amount
to
+63.
Use
a
lower
amount
if
a
shorter
sustain
time
is
desired.
Or,
assign
PED
2
again
if
a
longer
sustain
time
is
desired.
Using
negative
PED
2
amounts
will
invert
the
effect
of
the
Pedal
so
that
it
will
not
provide
sustain
but
act
as
a
"damper"
pedal.
Thus,
Pedal
2
control
in
this
instance
will
shorten
the
Release
time
of
the
Envelopes
when
used
in
negative
amounts.
The
LFOs
The
LFOs
are
commonly
used
to
provide
constant
vibrato-type
modulation,
but
(LFO
X)
can
be
used
t0
acheive
a
wide
variety
of
other
types
of
periodic
and
random
modulations
in
the Patch.
VCO
Frequency
Modulation
by
an
LFO
The
pitch
(FREO)oi
either
or
both
VCOs
can
be
modulated
by
an
LFO.
VALUE
X
range
is
-63
to
+63
where
0
as
the
VALUE
represents
no
effect
and
+63
is
maximum
modulation.
-63
is
maximum
"negative"
modulation
obtained
by
inverting
the
LFO's
waveform
180°
out
of
phase.
VCO
Pulse
Width
Modulation
by
an
LFO
The
Pulse
Width
(PW)
of
either
or
both
VCOs
can
be
modulated
by
an
LFO
to
obtain
a
"periodic"
or
steady
back-and-forth
change
(using
a
TRIANGLE
waveform)
between
a
wide
pulse
and
a
narrow
pulse.
This
can
be
used
as
a
form
of
vibrato.
VALUE
X
range
is
from
-63
to
+63
where
0
is
no
effect
and
+63
is
the
maximum
amount
of
positive
modulation.
Using
negative
modulation
Values
(-63
being
the
negative
limit)
inverts
the
LFO
waveform
180°
out
of
phase.
In
either
of
the
two
examples
given
above,
you
might
want
to
experiment
with
modulating
one
VCO
positively
while
the
other
is
being
modulated
negatively
by
the
same
LFO.
This
setup
will
provide
some
interesting
effects
as
one
VCO
modulates
opposite
of
the
other.
We'd
like
to
offer
one
small
word
of
caution
when
using
a
specific
type
of
modulation
-
namely
a
non-lagged
LFO
using
a
waveform
with
sharp
transitions
(UP
SAW,
DOWN
SAWor
SQUARE)
routed
to
the
Pulse
Width
(PtV)
of
a
VCO.
This
type
of
modulation
can
cause
a
"glitch"
(a
brief
distortion
in
the
audio)
depending
upon
the
PWsetting
and
the
amount
of
LFO
modulation
being
used.
The
Envelopes
One
of
the
characteristics
of
sound
as
we
perceive
it
is
the
way
in
which
the
(ENV
X)
harmonics
and
the
overall
loudness
change
as
the
sound
occurs.
Just
listen
to
the
different
playing
styles
of
a
violin
or
those
of
a
trumpet.
All
of
the
different
"personalities"
that
an
instrument
can
have
depends
in
great
part
upon
how
the
musician
articulates
in
his/her
playing.
VCF
Frequency
Modulation
by
an
ENVELOPE
In
the
MATRIX-12,
using
an
envelope
is
the
primary
way
in
which
harmonics
are
shaped
-the
Filter's
frequency
is
modulated
by
an
Envelope.
The
Basic
Patch
default
is
Envelope
#1
(displayed
as
ENV1).
154
Matrix-12
Owner's
Manual

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Oberheim Matrix-12 Specifications

General IconGeneral
BrandOberheim
ModelMatrix-12
CategorySynthesizer
LanguageEnglish

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