47
TRI SYMMETRY (EX)
This is a bipolar parameter that influences the shape of the triangle wave: If TRI SYMMETRY is set to 0,
the triangle wave oscillates in the conventional manner; as you set increasingly negative values, the
symmetry of the wave’s oscillation shifts towards the shape of a descending sawtooth; at increasingly
positive values, the symmetry of the wave’s oscillation shifts towards the shape of an ascending
sawtooth.
When you use a triangle wave in ENV MODE (see paragraph above), a small envelope with an attack and
a decay phase is generated. You can set the relative duration of these phases via TRI SYMMETRY. The
overall duration of the envelope is set via the RATE knob.
LFO 2
CLOCK (EX)
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.
MODE (EX)
Same as LFO 1; see paragraph above.
KEY TRIG PHASE (EX)
Selects the position in the wave cycle - i.e. the phase position - at which the LFO starts oscillating in
response to the start of a note.
The control range of 1 to 127 is equivalent to phase positions of 0 to 180 degrees; the value 0 switches
the KEY TRIGGER function completely off so that the LFO oscillates freely and assumes a random phase
position at the start of a note.
You can switch the KEY TRIGGER function off and on via the KEY TRIGGER button in the LFO 2 section.
Summary of Contents for VIRUS C SERIES
Page 80: ...VIRUS Owner s Manual 80...
