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In-depth Feature:  Access Virus Indigo TDM
Bruno writes: .

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Filter Envelopes
The 2 Filters have 4 modes, Lowpass, Highpass, Bandpass and Bandstop. Both have controls for Cutoff Frequency, Resonance, Envelope amount and Key Follow, the Cutoff and Resonance controls of each filter can be linked and additionally, Resonance Velocity and Envelope Velocity and Polarity can be adjusted. The Filters can be routed in one of four different ways, enabling up to a whopping 36db per octave slope. A Balance control is here to blend the two filter outputs. listen to filter sweep patch

Standard ADSR envelopes are provided both for Amp and Filter, these also have a Time control that changes the slope of the Sustain, causing the sound to rise up or decay prior to release. A Global Saturation control enables distortion of the oscillators in addition to the Patch Distortion on the FX page.

Global Effects page
The FX page is split into sections; Analog Boost acts rather like a 1 band EQ, adding extra clout at a tuneable frequency. Patch Distortion has 11 selectable shapes, ranging from soft overdrive to hard, bit reduced digital distortion. The 6 stage Phaser and Chorus both have controls for mix, rate, depth and feedback and the Chorus LFO has selectable waveshapes. The Delay can be clocked or manually adjusted in times up to 694ms and features modulation, feedback and a coloration control which alters the tone of the echoes produced. The Reverb has 4 types; ambience, small or large room and hall and also has controls for pre delay, damping, and feedback.

It should be noted that when using multiple Indigo plug-ins on the same DSP chip, one plug-in acts as Delay/Reverb master and all shared plugs have their delay sends bussed to it. It is worth setting up a plug-in just to act as master, or you could find some unwanted noises unexpectedly appearing.

FX page two has controls for the Vocoder section and also for routing of external inputs, global tuning and internal tempo. The Arpeggiator is on this page, this has 6 modes and 40 preset patterns, the range can be altered up to 4 octaves and the Arpeggiator can be clocked to any note length. A Swing control allows your sequences to groove against the track tempo and a note length control makes things more staccato or legato.

Finally the Mod Matrix page enables you to assign 3 controllers to up to 3 destinations for setting up expressive performance controls.

More Resources              Articles - full listing
  • Acces Pages at Synthsite
  • Virus Programming Tutorial (PDF)
  • Indigo Demo
  • Arpeggio Patch demo

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