Access os5 Manuale Utente
ACCESS VIRUS OS5
29
The Third Oscillator
THE THIRD OSCILLATOR
The VIRUS also has a third main oscillator,
which can be used to add more movement and
body to the sound. Oscillator 3 is activated us-
ing the OSC 3 ON key, and its parameters be-
come available after pressing the OSC 3
selection button.
which can be used to add more movement and
body to the sound. Oscillator 3 is activated us-
ing the OSC 3 ON key, and its parameters be-
come available after pressing the OSC 3
selection button.
Although the oscillator 3 parameters are no dif-
ferent from oscillators 1 and 2, there is one
thing you should keep in mind. Because most
sounds only require two oscillators, the third
oscillator has been made optional, i.e. it has to
be switched on whenever necessary.
ferent from oscillators 1 and 2, there is one
thing you should keep in mind. Because most
sounds only require two oscillators, the third
oscillator has been made optional, i.e. it has to
be switched on whenever necessary.
Oscillator 3 takes a certain amount of comput-
ing power, and the trade-off is a reduction of the
maximum polyphony: Playing a note using os-
cillator 3 uses up about an extra third of a voice
from the available polyphony. In other words:
Playing a three-voice chord using a sound
which includes oscillator 3 would use up four
(and not three) of the available voices.
ing power, and the trade-off is a reduction of the
maximum polyphony: Playing a note using os-
cillator 3 uses up about an extra third of a voice
from the available polyphony. In other words:
Playing a three-voice chord using a sound
which includes oscillator 3 would use up four
(and not three) of the available voices.
THE MIXER SECTION
You have already come across two parameters
of the MIXER section: OSC BAL determines the
mix ratio between Oscillators 1 and 2; in the left
half of its control range, OSC VOL determines
the master volume of the oscillator mix. In the
right half of the control range from the center
position to the far right, OSC VOL increases the
saturation intensity when a SATURATION curve
has been activated.
of the MIXER section: OSC BAL determines the
mix ratio between Oscillators 1 and 2; in the left
half of its control range, OSC VOL determines
the master volume of the oscillator mix. In the
right half of the control range from the center
position to the far right, OSC VOL increases the
saturation intensity when a SATURATION curve
has been activated.
Now we’ll take a closer look at the final control
element, the SUB OSC pot: It controls the vol-
ume of the fourth oscillator, the so-called Sub-
Oscillator, which always operates an octave
below Oscillator 1.
element, the SUB OSC pot: It controls the vol-
ume of the fourth oscillator, the so-called Sub-
Oscillator, which always operates an octave
below Oscillator 1.
The SubOscillator is mixed to the Oscillator 1
and 2 master mix signal as determined by the
OSC BAL pot. The master volume of the com-
posite mix is controlled by the OSC VOL pot.
The only other parameter available for the Sub-
Oscillator is accessible via the OSCILLATOR
EDIT menu where you have the option of select-
ing a triangle or pulse waveshape (SUB OSCIL-
LATOR WAVE SQUARE/TRIANGLE).
and 2 master mix signal as determined by the
OSC BAL pot. The master volume of the com-
posite mix is controlled by the OSC VOL pot.
The only other parameter available for the Sub-
Oscillator is accessible via the OSCILLATOR
EDIT menu where you have the option of select-
ing a triangle or pulse waveshape (SUB OSCIL-
LATOR WAVE SQUARE/TRIANGLE).
The NOISE control determines the level of an-
other basic audio source – the noise generator.
The other parameter belonging to the noise
generator is its color, which can be set in the
menu via NOISE Color in the OSCILLATOR-ED-
IT menu. In the central position (+0), the noise
generator produces so-called „white noise“
which includes all frequencies at an equal level.
Please note that, unlike the other oscillators,
noise level is not affected by OSC VOL – it is
even audible when this is turned down to zero.
other basic audio source – the noise generator.
The other parameter belonging to the noise
generator is its color, which can be set in the
menu via NOISE Color in the OSCILLATOR-ED-
IT menu. In the central position (+0), the noise
generator produces so-called „white noise“
which includes all frequencies at an equal level.
Please note that, unlike the other oscillators,
noise level is not affected by OSC VOL – it is
even audible when this is turned down to zero.
The fifth control in the mixer section determines
the level of the Ring Modulator. This is not con-
sidered one of the basic sound source, but is
the result of muliplying the output of oscillators
1 and 2. Ring modulation can create interesting
enharmonic sounds which are highly dependant
upon the frequency ratio between the two oscil-
lators (adjustable via e.g. OSC 2 SEMITONE) as
well as the waveforms (e.g. use two sine waves
for pure bell-like tones).
the level of the Ring Modulator. This is not con-
sidered one of the basic sound source, but is
the result of muliplying the output of oscillators
1 and 2. Ring modulation can create interesting
enharmonic sounds which are highly dependant
upon the frequency ratio between the two oscil-
lators (adjustable via e.g. OSC 2 SEMITONE) as
well as the waveforms (e.g. use two sine waves
for pure bell-like tones).
To blend in the ring modulator use EDIT: RING-
MODULATOR VOLUME (in OSCILLATOR EDIT
Menu). If the RINGMODULATOR VOLUME is
zero, the ring modulator is switched off. OSC
VOL does not affect the ring modulator level (or
indeed the noise volume). Therefore the original
oscillator signal can be leveled independently of
MODULATOR VOLUME (in OSCILLATOR EDIT
Menu). If the RINGMODULATOR VOLUME is
zero, the ring modulator is switched off. OSC
VOL does not affect the ring modulator level (or
indeed the noise volume). Therefore the original
oscillator signal can be leveled independently of