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VIRUS Owner’s Manual

46

This feature determines the base note for the filter KEYFOLLOW: When you press the key selected here,
the filter frequency you determined manually has priority - i.e. it is not influenced in any manner -
regardless of the KEY FOLLOW setting (see appropriate section ) for the filters. As the interval between
the KEYFOLLOW BASE value and the keys increases as you move up towards the higher end of the
keyboard, the influence of KEY FOLLOW increases accordingly. KEYFOLLOW BASE affects both filters
simultaneously.

When you set it to OFF, the LFO oscillates in the normal manner, independently of the global clock
generator (CLOCK TEMPO).
If you set it to a note value, then the wave cycle of the LFO is re-started - or more accurately, re-
triggered (much like KEY TRIGGER) at intervals equivalent to the note value. The note value actually
represents a fraction of a 4/4 beat. You can also set the tempo via CLOCK TEMPO (refer to the
appropriate section) and synchronize it to external MIDI clock.

Switches back and forth between two LFO operating modes:

In polyphonic mode, each of the voices involved is assigned a dedicated LFO.
The LFOs oscillate in different phase positions for each voice.

In polyphonic mode, all  voices are assigned the same LFO.

Controls the intensity of the KEY FOLLOW function - i.e. the rate at which the LFO follows the pitch of a
played note. At a value of 0, KEY FOLLOW is deactivated. You can switch the KEY FOLLOW function off
and on via the KEY FOLLOW button in the LFO 1 section.