Dco - Roland GR-700 Owner's Manual

24
DCO
(Digitally
Controlled Oscillator)
DCO
is
the digitally
controlled
oscillator
that controls the pitch
and generates the wave-
forms
that are
the
sound
source of the
synthesizers.
Owing
to
its
digitally
control
system, this
offers superior pitch stability
compared to the
VCO
{Voltage Controlled
Oscillator),
Parameter
Rant
in
Range
i6'
r
4'
Waveform
Waveform
Programmer
o
•
NOISE
Frequency Modulation
(LFO
switch)
Frep
Mod
LFO
ON
Off
Frequency Modulation
(ENV
switch)
Freq
Mod
ENV
On
=
Oft
Movement
This
is
to
change the pitch range of the
DCO
in
exact
one octave
steps
from
4'
to
16'
{4', 8',
16'). 8'
is
standard.
This
is
to
choose the
output
waveform
of
the
DCO.
[NOTE
1]
If
this
is
set
to
ON,
the
LFO
controls the
frequency
(pitch)
of the
DCO,
therefore,
a
vibrato effect
can
be
obtained.
[NOTE
2]
If
this
is
set
to
6n,
the
ENV
signal
con-
trols
the frequency (pitch) of
the
DCO.