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E
About Signal Processing
The built-in effects processor of the S4 Plus is similar to that of the Alesis
QuadraVerb 2, capable of generating multiple, fully digital effects simultaneously. The
S4 Plus effects processor has four inputs, called effect sends. You might think of
these as the typical post-fader sends found on a mixing console. In a Program, each
of the four Sounds can be assigned to one of the four effect sends. In a Mix, each
Program can use its own effects level and bus routing or you may override these by
assigning the entire Program (all 4 sounds) to one of the four effect sends and all at
the same level. Once you assign a Sound (in Program Edit Mode) or a Program (in
Mix Edit Mode) to an effect send, you can adjust the Sound's/Program's Effect Send
Level.
To route a Sound/Program only to an effect send, and not the Main or Aux outputs,
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assign the Output parameter of the Sound/Program to "OFF," assign its Effect Bus to
one of the four effect sends, and adjust the Effects Level.
The Effect Patch's Configuration determines the arrangement of effect functions of
each effect send. Imagine a Configuration as an arrangement of multiple effects
processors patched together at the end of each effect send.
Example: In one configuration, effect send 3 has its own separate reverb, while in
another configuration it has its own delay and a level control feeding a reverb shared
with send 1. When you're programming effects, you will need to refer to the charts on
pages 91 – 96 for the effect configuration you're using, so you know how the paths
from different effect functions interact.
The Effect functions consist of: Pitch, Delay, Reverb and in some cases Misc. (which
provides access to special effects such as EQ and Overdrive). Each function has
several types to choose from. For example, the Pitch effect can be either a chorus, a
flange, a resonator, etc. The Reverb can be a large hall, plate, gated, etc. The effect
types available for each effect function depends on the Configuration you are using.
The parameters available for an effect function depend on the selected effect type.
Some effect types have very few parameters, while others have many. For example,
the stereo delay effect has about twice as many parameters as the mono delay effect
(since the stereo delay has two adjustments– left and right – for several parameters).
Consequently, the more parameters an effect has, additional pages become available
for that function. The number of pages the currently selected function has and the
current page are always shown in the bottom left of the display.
Each effect has stereo outputs, which may be routed to the Main Left and Right
outputs using the Mix function (the Aux Left and Right outputs do not use the internal
effects processing).
S4 Plus Reference Manual
C
HAPTER
E
DITING
Level
1 SOUND
Editing Effects: Chapter 7
7
FFECTS
Outputs
Main Left
Pan
Aux Left
Main Right
Aux Right
Effect Sends
Effect
1
Level
2
3
4
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