Access virus os2 Manuale Utente
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.
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.
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.
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.