Section 4 - Algorithms
EQ-TREMOLO-DDL
00 - EQ-
Tremolo-DOL
combines a tremolo effect, which is a pulsating change
in
volume,
with
an
EQ
and
a digital delay.
EQ-Tremolo-DDL Signal Routing
Main
Outputs
The
signal
enters
an
input
level trim (parameter
17)
followed
by
a
programmable
EQ
and
is then
routed
to
the tremolo. The tremolo is routed directly to the output. The left
channel
signal passes
through
the
digital delay
and
is routed back into the delay. There is
another
signal from the
delay
that
is
routed
to the
output
on
the right side.
One
Regen
parameter
(09)
between
the
delay
sends
controls
the
left
and
right delay level. This constitutes the
"ping-pong"
effect. There are
two
echoes
that
are sent to the left
and
right outputs respectively. The signal from
the
two
discrete echoes
has
one level control. There is also
an
external
dry
signal (not
shown)
that
goes
directly from the
input
to the
output
and
is controlled
with
the
mix
parameter
(01).
The
parameters
available for this algorithm are:
01-
Mix
02-Volume
See
the
descriptions
under
the Mix
and
Volume Parameters,
in
the
beginning
of this section.
03 - Tremolo Rate
Range: 000 to 200
This
parameter
sets the rate of modulation. Mid values create a faster
wavering
sound
.
High
values
will raise
the
level
up
into the audio range, creating a ring
modulation
(amplitude
modulation)
effect. This parameter,
when
used in conjunction
with
the Sample &
Hold
Rate
parameter,
can create some interesting staccato effects.
04 - Tremolo Depth
Range:
00
to
99
This
parameter
sets the
depth
of amplitude modulation.
05 - LeWRight
LFO
Range: Out-of-Phase or In-Phase
Controls
whether
the left
and
right channels of the stereo tremolo will
modulate
in
or
out-of-phase.
ENSONIQ DP/4 Musician's Manual
101
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