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Access Music Virus Indigo Plug-in Guide40

3 During playback, watch the Semitone control

and listen to how the sound character changes.

When playback stops, experiment with the De-

tune and Semitone controls while playing your

MIDI keyboard controller.

For even more sonic variety and complexity,

add oscillator 3 into the mix and vary its wave-

shape and tuning. With three oscillators at your

disposal, you can create some extremely fat and

expressive sounds.

The Sub Oscillator

Using the Sub Oscillator is another way to add

weight to a sound. It adds a tone an octave be-

low the fundamental pitch of oscillator 1.

Choose the waveshape of the Sub Oscillator

(square or triangle) using the Sub Shape button.

Memory Location 3 demonstrates the Sub Oscil-

lator.

To hear the Sub Oscillator:

1 Reset the patch to its original state by choos-

ing Tutorial Sounds > Tutorial 2 Sound from the

Librarian menu.

2 Click memory location 3, “Sub Oscillator” and

press the Spacebar to begin playback.

3 During playback, watch the Sub Vol control in

the Mixer section and listen to how the sound

character changes.

When playback stops, experiment with the Sub

Vol and Sub Shape controls while playing your

MIDI keyboard controller.

Phase Sync Effects

You can create interesting timbral effects by de-

tuning oscillator 2 and enabling Sync to syn-

chronize its wavecycle to oscillator 1. This pro-

duces a unique hard-edged sound.

You must enable Sync, tune oscillator 2 higher

than oscillator 1 and vary the interval to pro-

duce this effect.

Memory Location 4 demonstrates this.

To hear the phase sync effect:

1 Reset the patch to its original state by choos-

ing Tutorial Sounds > Tutorial 2 Sound from the

Librarian menu.

2 Click memory location 4, “Osc 2 Sync” and

press the Spacebar to begin playback.

3 During playback, watch the oscillator 2 Semi-

tone control and listen to how the sound char-

acter changes.

When playback stops, experiment with the os-

cillator 2 Detune and Env Osc-2 controls while

playing your MIDI keyboard controller.

Frequency Modulation

You can create harmonically complex timbres

using the frequency modulation (FM) capabili-

ties of Virus Indigo.

With frequency modulation, oscillator 1 is used

to modulate the frequency of oscillator 2. As a

result, harmonics known as sidebands are gener-

ated, adding timbral complexity.

In this example, the Filter Envelope varies

the pitch of oscillator 2 (using the Env Osc-

2 control). This is a more convenient than

manually adjusting the pitch of oscillator 2.

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