Справочник Пользователя для Access virus os4
42
CHAPTER
4
Introduction
control). Another option you might
like to have at your disposal is ran-
dom parameter control.
like to have at your disposal is ran-
dom parameter control.
In the Virus, both of these tasks are
executed by a so-called LFO (low
frequency oscillator) that oscillates
at frequencies below the audible
range. An LFO is similar to the
oscillators you have encountered
thus far, but it oscillates signifi-
cantly slower so that its output
signal is too low for human hear-
ing. So what good are they if you
can’t hear them? LFOs are used in
much the same manner as enve-
lopes, with the major difference
that the are repeated indefinitely.
executed by a so-called LFO (low
frequency oscillator) that oscillates
at frequencies below the audible
range. An LFO is similar to the
oscillators you have encountered
thus far, but it oscillates signifi-
cantly slower so that its output
signal is too low for human hear-
ing. So what good are they if you
can’t hear them? LFOs are used in
much the same manner as enve-
lopes, with the major difference
that the are repeated indefinitely.
LFO 1
Start with the usual basic sound
configuration or chose a modified
sound to suit your taste. Locate the
RATE pot in the LFO 1 section of the
control panel. The RATE pot is
equipped with an LED that indi-
cates the speed of the LFO as well
as its waveshape. Turn the RATE
pot and check out how the flash of
the LED indicates the change of
pace as you rotate the pot.
configuration or chose a modified
sound to suit your taste. Locate the
RATE pot in the LFO 1 section of the
control panel. The RATE pot is
equipped with an LED that indi-
cates the speed of the LFO as well
as its waveshape. Turn the RATE
pot and check out how the flash of
the LED indicates the change of
pace as you rotate the pot.
Currently you are unable to hear
the effect of the LFO as its modula-
tion intensity is set to 0 in the
sound program. In order to change
this setting, you must access the
AMOUNT button which works in
conjunction with five vertically
arrayed LEDs labeled OSC 1, OSC 2,
PW 1+2, RESO 1+2 and ASSIGN:
Press the AMOUNT button repeat-
edly and observe how the LEDs
flash in succession (the LEDs OSC 1
and OSC 2 flash separately as well
as in unison). The corresponding
modulation targets appear in the
display, along with the modulation
intensity values as determined by
the VALUE pot and VALUE buttons.
(You can also scroll through the
the effect of the LFO as its modula-
tion intensity is set to 0 in the
sound program. In order to change
this setting, you must access the
AMOUNT button which works in
conjunction with five vertically
arrayed LEDs labeled OSC 1, OSC 2,
PW 1+2, RESO 1+2 and ASSIGN:
Press the AMOUNT button repeat-
edly and observe how the LEDs
flash in succession (the LEDs OSC 1
and OSC 2 flash separately as well
as in unison). The corresponding
modulation targets appear in the
display, along with the modulation
intensity values as determined by
the VALUE pot and VALUE buttons.
(You can also scroll through the