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Chapter 5: Virus Indigo Tutorials 51

Using Virus Indigo as a Filter

You can pass an external or existing audio signal

through Virus Indigo and process it in many in-

teresting ways by applying filtering, filter satura-

tion, chorus, phasing, delay effects, or modula-

tion.

To filter an external or existing audio signal:

1 Insert Virus Indigo on an Instrument track or

audio track containing the audio you want to

process.

2 Open the FX-2/Global page and in the Input

section, set the Input Mode to either Dynamic

or Static.

In Dynamic input mode, the envelope generator

is active and you must play MIDI notes to pass

audio through.

In Static input mode, the envelope generator is

not active and you don’t need to play MIDI

notes to pass audio through.

3 Press the Spacebar to begin playback.

4 Fine tune the effect by adjusting the Filter

Mode, Cutoff, Resonance, Saturation, and other

controls.

Using the Envelope Follower

The Envelope Follower replaces the filter enve-

lope with an envelope based on the dynamics of

an external input signal. Envelope followers are

typically used to produce “wah-wah” type ef-

fects.

To use the Envelope Follower:

1 Insert Virus Indigo on an audio track contain-

ing the audio that you want to process.

2 Open the FX-2/Global page and in the Input

section, set Input Mode to Static.

3 In the Envelope Follower section, enable Env

Follow.

4 Open the Mod Matrix page and in the

Assign 1 section, choose Filter Envelope as the

Source and Filter Cutoff as the Destination.

5 Set the Amount control to 63. The higher the

setting, the more pronounced the effect.

6 Open the Filter/Env page and set the filter

Mode, Cutoff, and Resonance of filter 1 and 2 to

a mid-range value.

7 Press the Spacebar to begin playback.

8 Fine tune the effect by adjusting the Filter Res-

onance, Filter Cutoff and Filter Envelope con-

trols.

Attack sets the Envelope Follower’s response

time when increasing the volume of a signal.

Release sets the Envelope Follower’s response

time when decreasing the volume of a signal.

Level sets the Envelope Follower’s intensity.

Static input mode uses two Virus Indigo

voices.

To hear more examples of external input

processing, load one of the “Input” presets

with the Librarian.

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