
Chapter 3: Virus Indigo Controls 23
Ring Mod
Ring Mod provides a second ring modulator (in
addition to the ring modulator on the Osc page)
that you can use to modulate audio input sig-
nals. This ring modulator multiplies the ampli-
tude of an audio input signal with Indigo’s other
oscillators to create complex enharmonic over-
tones.
Mix Controls the amount of ring modulation
from ring modulator 2 added to the patch.
Phaser
Use the controls in this section to set the char-
acter and amount of phasing. Phasing animates
sounds with a sweeping, swirling effect by add-
ing a phase-shifted copy of an audio signal to it-
self. You can use phasing to convert a mono
patch to stereo.
Mix Controls the balance between the dry
source signal and the phasing effect. A setting of
127 is 100% wet.
Rate Controls the rate of the phasing effect.
Depth Controls the intensity of the phasing ef-
fect.
Frequency Controls the frequency of the
phaser’s all-pass filter. Lower settings produce
more radical phasing effects.
Stages Selects the number of filter stages (filter
poles) of the phasing effect. The greater the
number of stages, the deeper and more complex
the phasing effect.
Spread Controls the bandwidth of the phasing
effect.
Feedback Controls feedback amount. Higher
feedback settings produce more intense phas-
ing. Negative values can produce more intense
phasing.
Patch Distortion
Use the controls in this section to set the char-
acter and amount of harmonic distortion added
to the signal. Patch distortion character is
strongly influenced by oscillator volume, wave-
shape, and filter resonance.
Intensity Controls the amount of harmonic dis-
tortion added to the patch.
Curve Selects the character of the distortion
added to the patch. Choices are: Off, Light Soft,
Mid, Hard, Digital, and Shaper.
Chorus
Use the controls in this section to set the char-
acter and amount of chorusing. Chorusing
thickens and animates sounds by adding a de-
layed, pitch-modulated copy of an audio signal
to itself. You can use chorusing to convert a
mono patch to stereo.
Mix Controls the balance between the dry
source signal and the chorus effect. A setting of
127 is 100% wet.
Rate Controls the rate of the chorus effect.
Depth Controls the intensity of the chorus ef-
fect.
Delay Time Controls the delay time of the cho-
rus effect. Longer delay times produce wider
chorusing. For flanging effects, use a delay time
of less than 10 ms.
See “Using Input Mode” on page 50 for
more information on using the key input to
route external signals to the ring modulator
(or Vocoder).
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