Access os5 Manuale Utente

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ACCESS VIRUS OS5
71
LFO (Panel)Filter Envelope
LFO and ModMa-
trix
 
LFO (PANEL)
LFO SELECT
The SELECT button is used for selecting one of
the three LFOs or the modulation matrix. The
controls in the LFOs/MOD section only apply to
the current selection (one of the LFOs or MOD).
RATE
Determines the speed or rate of the LFO. In pol-
yphonic sounds, the manually selected RATE
value deviates slightly from voice to voice to liv-
en up the sound of the LFOs, which also oscil-
late polyphonically. When the LFO is synced up
to the master clock, the desired note value is
selected via the RATE knob.
SHAPE
Determines the waveshape of the LFO. You can
select from a sine, triangle, sawtooth or pulse
wave. WAVE opens a local menu. Here you can
select 64 further LFO waveshapes in the display
using the VALUE knob or the VALUE buttons.
You can chose from a stepped random modula-
tion (S&H; short for Sample & Hold), a smooth
random modulation (S&G; short for Sample &
Glide) and 62 cyclic modulations that are based
on the oscillator modes. The latter allow you to
create interesting rhythmic LFO modulations.
AMOUNT (LFO-1)
After selecting LFO 1 (via the SELECT button)
you can use the lower SELECT button to scroll
down through the modulation destinations for
LFO 1. If you press and hold the EDIT button at
the same time, you can scroll in the other direc-
tion. The following destinations are available:
-  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
-  FILTER GAIN  An additional modulation des-
tination of LFO 1. Here the input level of the
filter section is modulated (and thus the sub-
sequent saturation level). The effect of a FILT
GAIN modulation is a periodic change in the
saturation level which is linked to a corre-
sponding tremolo (periodic change in vol-
ume). If  the signal is not saturated in any
manner, then the only audible result is a trem-
olo effect. We purposely placed the modula-
tion point in front of the filter section in the
signal chain. This means that the distortion
amount – i.e. the intensity of the effect – is al-
so modulated when you activate SATURA-
TION. Furthermore, you can use fast LFO
oscillations to generate brief impulses (tran-
sients) in the oscillator signal that excite the
resonant frequencies of the filters. The filters
will fade out freely since their output signal is
not affected by the FILT GAIN volume modu-
lation.
-  ASSIGN   A freely selectable sound parame-
ter for LFO modulation. The destination can
be controlled on the previous menu page.