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Realtime Performance Functions
The S4 Plus provides various ways to control the sound as you are playing. Try out
some of these functions while playing your MIDI keyboard. The sound of the effects
can also change by using these controllers. The effect of these realtime controllers
varies from Program to Program; in some they may not be active, and in others they
may have a dramatic effect.
•
Velocity. The volume and tonal quality of the sound will change according to how
hard you play the keyboard.
•
Aftertouch . The action of pressing a key down after playing it is called
"aftertouch" (it is also sometimes referred to as "Pressure" since it corresponds to
the amount of pressure being applied to the keyboard). Pitch, tone and volume
(among other things) can be changed using aftertouch.
•
Pitch Bend Wheel. While playing a note, you can move the PITCH BEND
WHEEL up to raise the pitch, or down to lower the pitch. The amount of pitch
bend available can be different for each Program.
•
Modulation Wheel. By raising the MODULATION WHEEL, you can add
expressive modulation effects (such as vibrato or tremolo) while you play. The
type of modulation effect can be different for each Program.
•
The Quad Knobs. These are described below.
Further expressive control is available with a pedal switch or expression pedal. By
using a sustain pedal connected to your master MIDI keyboard, you can have the S4
Plus' sound sustain even after you release the keys. By connecting an expression
pedal to your master MIDI keyboard, you can use the pedal to change the volume or
tone (or some other quality such as reverb depth or vibrato speed) of the sound, if the
Program is edited to use the pedal(s).
The Quad Knobs
To the right of the display are four knobs referred to as Quad Knobs , [1]—[4], each
with its own button. The Quad Knobs provide control over various parameters
depending on the mode you are in. The parameters in the display will change
depending on which function and page are selected. Not all four Quad Knobs are
active in all windows; there are many pages that have only one active Quad Knob.
In Program Play Mode and Mix Play Mode, the Quad Knobs act as Controllers A–D.
These Controllers are defined in Global Edit Mode (Page 3) to transmit various MIDI
controller messages. If a Program or Mix uses these Controllers A–D, a pair of
arrows will point towards the active controller's letter in the display. This indicates that
moving the related Quad Knob will have some kind of effect on the selected Program
or Mix. In the illustration below, Controller A (Quad Knob [1]) is used by the selected
Program.
When in Program Edit Mode or Mix Edit , the Quad Knobs are linked to the
parameters that appear in the right side of the display. The lower line of the
alphanumeric display will show the abbreviated name of each parameter, with a bar
graph below it representing the current setting of the parameter. By turning Quad
S4 Plus Reference Manual
Your First Session With The S4 Plus: Chapter 2
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