Casio CZ-5000 - CZ-5000 Sound Synthesis; CZ-5000 Block Structure Comparison; DCO, DCW, DCA, DEG Explained

CZ-5000
Sound
Synthesis
Block
Structure
of
the
CZ-5000
(as
compared
to
an
Analog
Synthesizer)
The
fascinating
thing
about
the
CZ-5000
is
not
only
its
realistic,
clear
sound,
but
also
the
simplicity
of
sound
creation
it
offers.
The
CZ-5000
eliminates
one
of
the
major
drawbacks
of
previous
digital
synthesizers,
namely
that
it
was
extremely
difficult
to
actually
synthesize
the
kind
of
sound
one
had
in
mind.
You
can
now
easily
create
any
sound
you
want
as
you
please.
The
secret
behind
this
ability
{s
that
the
CZ-5000
has
inherited
the
basic
easy-to-understand
structure
of
sound
synthesis
from
the
analog
synthesizer.
In
other
words,
the
CZ-5000
combines
the
superior
sound
quality
of
a
digital
synthesizer
with
the
easy-to-understand
principles
of
sound
synthesis
offered
by
analog
instruments.
In
the
following,
we
will
explain
the
block
structure
of
the
CZ-5000
while
comparing
it
to
that
of
an
analog
synthesizer.
Note:
To
those
of
you
who
have
never
used
synthesizers
before,
we
stronly
recommend
reading
the
appendix ‘‘Synthesizer Sound Seminar”’ first.
Analog
Synthesizer
Digital
Synthesizer
—
CZ-5000
*This
is
the
basic
general
structure
of
analog
*There
are
two
blocks
such
as
the
one
enclosed
by
synthesizers.
Details
will
differ
according
to
the
dotted
line.
Seeanhiode
0
PSE
Pipees
te
ee
VCO
VCF
VCA
DCO
DCW
DCA
:
(Pitch)
»
(Timbre)
»
{Volume}
»
(Pitch)
»
(Timbre)
=
(Volume)
=
: t ft t
LEO
DEG
DEG
DEG
em
wm
wwe
wm
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= digital sound signals
w analog sound signals
~ digital control signals
+ analog contro! signals
Looking
at
the
above
diagram,
it
is
evident
that
the
CZ-5000
has
practically
the
same
block
structure
as
analog
synthesizers.
e
DCO
(Digital
Controlled
Oscillator)
—
A
digital
circuit
that
corresponds
to
the
VCO
(Voltage
Controlled
Oscillator)
of
an
analog
synthesizer,
and
determines
the
pitch
and
the
basic
wave
form™
of
a
sound.
*
The
CZ-series
offers
about
10
times
as
many
basic
wave
forms
as
a
normal
analog
synthesizer.
DCW
(Digital
Controlled
Wave)
—
A
digital
circuit
that
corresponds
to
the
VCF
(Voltage
Controlled
Filter)
of
an
analog
synthesizer,
and
controls
the
timbre
of
a
sound.
DCA
(Digital
Controlled
Amplifier)
—
A
digital
circuit
that
corresponds
to
the
VCA
(Voltage
Controlled
Amplifier)
of
an
analog
synthesizer,
and controls the volume of a sound.
©
DEG
(Digital
Envelope
Generator)
—
Corresponds
to
the
EG
(Envelope
Generator)
of
an
analog
synthesizer,
and
controls
the
change
of
pitch,
timbre
and
volume
over
time
according
to
a
maximum
of
16
parameters.
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ge
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meanin:
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The CZ
After <
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® Lin
Note ~
Note 2
The CL
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an eve
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