Intellijel Quadra + Expander - Manual (Page 5)

Intellijel
Quadra
Manual
Version
1
Page
|
5
Quadrature
Mode
Explained
Quadrature
mode
links
the
function
generators
into
pairs
of
looping
envelopes
that
are
interdependent.
It
vaguely
resembles
two
waveforms
that
are
phase
shifted
90
degrees
relative
to
each
other
(hence
the
“quadrature”
label).
Each
pair
is
independent
and
function
identically
so
we
will
concentrate
on
the
function
generators
1+2
pair
for
this
section.
The
Quadra
Expander
has
two
modes
that
are
selected
via
jumper
on
the
rear
of
the
module.
The
primary
difference
between
these
two
modes
is
in
what
restarts
their
cycle.
In
Mode
A
the
EOC1
retriggers
the
cycle
while
in
Mode
B
EOC2
retriggers
the
cycle.
Mode
A
When
1
is
triggered
it
moves
through
its
Attack
phase,
it
then
holds
until
2
completes
its
Attack
phase
then
2
will
sustain
until
1
completes
its
Decay
phase.
The
EOC1
then
retriggers
the
envelope
while
envelope
2
will
move
continues
to
complete
its
Decay
phase.
Use
the
OR
output
for
the
resulting
four
stage
function.
Mode
B
When
1
is
triggered
it
moves
through
its
Attack
phase,
it
then
holds
until
2
completes
its
Attack
phase
then
2
will
sustain
until
1
completes
its
Decay
phase,
then
finally
2
will
move
through
its
Decay
phase.
One
the
Decay
phase
of
2
is
complete
1
is
triggered
and
the
whole
sequence
starts
again.
Use
the
OR
output
for
the
resulting
four
stage
function.
An
interesting
application
of
Mode
B
is
that
you
can
use
duration
of
Envelope
2
to
control
the
frequency
of
re-­‐triggering
of
Envelope
1.
If
you
set
Envelope
2
so
it
had
a
an
attack
time
of
0
then
Env1
would
become
an
AD
envelope
triggered
at
a
rate
determined
by
the
decay
time
of
Envelope
2.
This
can
become
very
interesting
for
creating
rhythmic
patterns.