Alesis S4 Plus Reference Manual page 104

Stereo Chorus. In the case of a Stereo Chorus, the signal is split into three parts
with a dry signal and a separate Detuning section for both left and right channels.
When the left channel is detuned sharp, the right is detuned flat, and vice versa.
Once again, this causes the effect to become more pronounced and dramatic.
DRY
SIGNAL
Mono Flange. First used in the 1960s, "Flanging" was achieved by the use of two
tape recorders that would record and play back the same program in synchronization.
By alternately slowing down one tape machine, and then the other, different phase
cancellations would occur. Since the slowing down of the tape machines was done by
hand pressure against the flanges of the tape supply reels, the term "Flanging" came
into being.
The effect of Flanging is achieved by splitting and slightly delaying one part of the
signal, then varying the time delay, again with an LFO. The delayed signal is then
mixed back with the original sound to produce the "swishing" or "tunneling" sound.
DRY
SIGNAL
Many variables are available, from varying the speed and depth of the LFO to feeding
back part of the signal to make the effect stronger. The Flanger's waveform shape
can be either "Normal" or "Inverted". Use the "Inverted" setting for a more dramatic
flange effect.
S4 Plus Reference Manual
DRY SIGNAL
FEEDBACK
DETUNE
DELAY
DETUNE
FEEDBACK
DRY SIGNAL
DELAY
FEEDBACK
DRY SIGNAL
Editing Effects: Chapter 7
CHORUSED
LFO
CHORUSED
LFO
LEFT
OUTPUT
RIGHT
OUTPUT
FLANGED
OUTPUT
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