SoundCraft Vi1 User Manual page 206

Chorus - Stereo
Chorus creates a lush, full sound by combining two or more signals together where one is unaffected and
the other signals vary in pitch ver y slightly over time. Chorus is commonly used to fatten up tracks and to
add body to guitars without coloring the original tone. Chorus can also be used with discretion to thicken
a vocal track.
Flanger - Stereo
This effect was originally created by simultaneously recording and playing back two identical programs on
two tape recorders, then using hand pressure against the flange of the tape reels to slow down first one
machine, then the other. The result was a series of changing phase cancellations and reinforcements, with
characteristic swishing, tunneling, and fading sounds.
Phaser - Stereo
The Phaser automatically moves frequency notches up and down the spectrum of the signal by means of
a low frequency oscillator (LFO), creating an oscillating "comb filter" type effect. This effect is very useful
on keyboards (especially pad presets) and guitars.
Tremolo/Pan - Stereo (Wet Only)
Tremolo/Pan creates rhythmic changes in signal amplitude. Tremolo is obtained by setting Phase to 0
degrees, and affects both channels' amplitude simultaneously.
If the Phase is set to 180 degrees, an AutoPanner effect is generated, with the amplitude of one channel
being raised whilst that of the other channel is lowered. Speed settings below 1Hz are recommended in
this case.
Vibrato - Stereo (Wet Only)
Vibrato is obtained by smoothly varying the pitch of the signal just sharp and flat of the original at a
determined rate. Phase controls whether the pitch of both channels is modulated together, or in an
opposite direction.
Rotary - Mono In/Stereo Out (Wet Only)
Rotary speaker cabinets were designed to provide a majestic vibrato/choir effect for electronic theater
and church organs. The most well known rotary speaker is the Leslie™ Model 122, which has two counter-
rotating elements: a high-frequency horn and a low-frequency rotor with slow and fast speeds. The sound
generated as the spinning elements change speed is truly magical. The swirling, spacious effect is difficult
to describe – but clearly recognizable.
The Rotary effect is modeled after a Leslie-style cabinet. The input signal is split into high and low-
frequency bands. The rotation effect is created by a synchronized combination of pitch shifting, tremolo,
and panning. Like the physical cabinet, the high (horn) and low (rotor) frequencies are "spun" in opposite
directions. Horn and rotor speeds are independent, and designed with acceleration and deceleration
characteristics to simulate the inertia of the original mechanical elements.
A virtual necessity for organ music, Rotary also sounds remarkable with guitar and electric piano rhythm
parts. In fact, this program is a great alternative to the Chorus and Tremolo effects for any sound source.
Pitch Shift - Stereo
This effect shifts the frequency spectrum of the input signal. Altering the pitch of a sound produces a wide
range effects - from subtle detunes to full interval shifts up or down a two octave range. The Pitch Shift
effect is a chromatic shifter, meaning all notes of the scale are shifted by the same interval. Pitch Shift is
very useful with guitar tracks, monophonic synth lines, or where special vocal effects are needed.
Page 20 - 16 Soundcraft Vi1™ User Guide Issue 0810