
5 - Effects
Effects Descriptions
88 Proteus VX Operation Manual
Phaser
A Phaser (or phase shifter) produces a fixed number of peaks and notches in the audio
spectrum which can be swept up and down in frequency with a low frequency oscil-
lator (LFO). This creates a swirly, ethereal sound with harmonically rich sound sources
of a type of pitch shift with simpler sounds. The phase shifter was invented in the
1970’s and the characteristic sound of this device evokes emotions of that musical era.
Modulation Parameters
• Wet/Dry Mix
• Depth (Modulation)
• Rate (Modulation)
• Feedback
Parameter Description
Depth Controls how much the Center Frequency is swept by the LFO.
Range: 0% to 100%
Rate Controls the sweep rate of the Low Frequency Oscillator.
Range: .01Hz to 20Hz
Feedback Increases the depth of the notches and height of the peaks.
Inverted values invert the feedback polarity.
Range: -100% to +100%.
Stages Selects between: 3, 6, 9, or 12 phase shift stages and thus the
number of peaks and notches in the frequency response.
LFO L/R Phase Offsets the LFO between the left and right phaser channels.
(0°, 90°, or 180°). This adds animation to the sound.
Phaser
(stereo)
LFO
In
Out
Feedback
Depth
Stages
Rate
Signal path = Stereo
L/R
Phase
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