Access virus os2 Manuale Utente

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section), including everything from a descending sawtooth to a conventional triangle and on to an
ascending sawtooth.
KEY FOLLOW
Activates a function in which the LFO frequency is controlled via the note number. When EXPERT MODE
is active, you have the option of setting the control intensity in the EDIT menu under LFO 1 KEY
FOLLOW AMT (see appropriate section).
ENV MODE
Activates an operating mode in which the LFO oscillates like an envelope: The LFO cycles once only
following the start of the note; the response of the LFO shifts from bipolar to unipolar.
If the LFO waveshape S&H (Sample & Hold) is active, then the LFO is assigned a new random value with
each new note. This new value is valid for the entire duration of the note.
AMOUNT
This button does not actually control a parameter, it opens a local menu. This menu contains
independent modulation intensities for controlling the following parameters via LFO 1:
OSC 1
Pitch of Oscillator 1
OSC 2
Pitch of Oscillator 2
PW 1+2
Both pulse widths jointly
RESO 1+2
Both filter resonances
FILT GAIN
Input level of Filter 1
FILT GAIN also has an influence on the post-filter saturation stage - although without the level
compensation controlled via OSC VOL (see appropriate section). The effect of a FILT GAIN modulation is
a periodic change in the saturation level which is linked to a corresponding tremolo (periodic change in
volume). If  the signal is not saturated in any manner, then the only audible result is a tremolo effect.
While you are dealing with one of the parameters discussed here, the corresponding LED will flash. If
this parameter is assigned a value other than 0, it will illuminate continuously when you exit the menu.
Between the two positions of OSC 1 and OSC 2 you will find the position OSC 1+2, which
lets you jointly control the modulation intensities of both oscillators. In this position, the OSC
1 and OSC 2 LEDs flash.
LFO 2
RATE
Same as LFO 1; see paragraph above.
SHAPE
Same as LFO 1; see paragraph above.