(Digitally
Controlled oscillator)
DCO is the digitally controlled
oscillator that
controls the pitch and creates two types
of
waveforms which
are
the sound source of the
synthesizer.
Compared to
VCO (Voltage Con-
trolled
Oscillator),
DCO has superior stability.
The
operations and functions of the
DCO
are
virtually the
same as
those of the VCO.
o
o
'?''
(3)
(2;
o @
<D
CDnu
s\>
You can select the output waveform
of
the
DCO. Each switch can be individually turned
on or off and can be
simultaneously
used
with
another switch.
(2)
PWM Mode Switch
When it is set to MAN, pulse width can be set
to a certain
ratio. When it is set to LFO,
pulse
width
is controlled
by
the signal from the LFO.
When PWM Mode switch
©
is set to MAN,
this knob controls the pulse
width, and con-
trols the intensity of the
modulation when it is
set to LFO
(7)
Range Selector Button
This selects the pitch of the DCO. When it is
set to
8',
"do "(C)
3rd from the lowest falls on
the
Middle
C of a
piano keyboard. By using
4'
or
16'
position, one octave is
shifted
up
or
down,
changing total range of the keyboard.
(Refer to P. 24 for the
details)
<Pulse
Width
>
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.
(J)
SUB
•
Sub
Oscillator Level Knob
It controls the volume of the Sub
Oscillator.
(5)
LFO
•
Modulation Knob
It
adjusts the depth of
the vibrato effect when
the LFO
is controlling
the
pitch of the DCO.
®
It controls the volume of the NOISE.
To Next Page
Loading...
