S4 Plus Signal Flow; The Four Sounds Of A Program - Alesis S4 Plus Reference Manual

• When you want different sounds to respond to different MIDI channels.

S4 Plus Signal Flow

The Four Sounds of a Program

Each Program is made up of at least one to four sounds. A sound is made up of
several components including a voice (the original sound material) which passes
through a low-pass filter and an amplifier. The voice, filter and amp modules each
have direct modifiers (Pitch LFO, Filter LFO, Amp Envelope) which affect how each
will function in the Program. You can layer these sounds together, or divide them into
regions of the keyboard, or a combination of these things.
The following diagram illustrates the signal flow within each S4 Plus Program.
Sound 1
Pitch
LFO
MIDI
Input
Range Voice
Pitch
Envelope
Assignable Modulation Sources
(velocity, aftertouch, modulation wheel, pitch bend, etc.)
Sound 2
Sound 3
Sound 4
Let's look at each module's function in detail.
S4 Plus Reference Manual
Filter Amp
LFO LFO
Filter Amp Pan
Filter Amp
Envelope Envelope
Effects
Level
Editing Programs: Chapter 6
Output
Sends
1—4
Effects
Effects
Processor
Buss
(reverb, delay,
chorus, etc.)
Main L
Aux L
Main R
Aux R
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