Roland JUNO-60 - HPF; VCF

II
.
Functions
for
Sound
Creating
DCO
DCO is
the
digitally
controlled
oscillator
that
(D
totally
Control
Oidllatar}
controls the
pitch
and creates
three
types of
waveforms
which
are
the sound
source of
the
synthesizer.
Compared
to
VCO
{Voltage
Controlled
Oscillator},
DCO
has superior
stability.
The
operations
and functions
of
12
the
DCO
are
virtually
the
same
as those
of
the
VCO. A
DCO
does
not,
however,
provide
portament
function,
because
of
its
digitally
controlled
system.
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nj
xi
ru
.
WAVEFORMS
You can
select the
output waveform
of
the
DCO. Each
switch
can
be individually
turned
on
and off
and can
be used with
other switches.
©
PWM
Mode
switch
When
it
is set
to MAN,
pulse width
can
be
fixed.
When
it
is set
to LFO
or ENV,
pulse
width
is controlled
by* the
corresponding
signal
from
the
LFO
or the Envelope
Gene-
rator.
(3)
PWM • Pulse
Width Modulation
knob
When PWM Mode switch
@
is set to
MAN,
this knob
controls
the pulse width, and con-
trols
the
intensity of the modulation
when
ft
is
set to LFO or ENV.
SUB
OSC
•
Sub Oscillator Level knob
It controls
the volume
of the
SUB
OSC.
(5)
LFO
•
LFO Modulation knob
It
adjusts the depth
of the
vibrato
effect
when
the LFO
is controlling
the pitch
of the
DCO.
©
NOISE
•
NOISE level knob
It controls the volume
of the NOISE.
<Pulse
Wave>
When
the
top and bottom
portions of
the
square
wave
are unequal,
the result
is what
is
called
a pulse wave.
The
harmonic
content
of
the
pulse
wave will
depend
greatly
on
the
width of
the
pulses. It
is possible
to
modulate,
or
change
the pulse
width
by means of
the
LFO
or the
envelope
generator.