Casio CZ-3000 User Manual

The
revolutionary PD
sound source
system
thus makes
it
possible to
output waveforms
that differ from
cosine waves
by simply distorting
the cosine (or
sine) wave
read from ROM,
Figs.
"I through
3 illustrate
the patterns
produced
by increasing the
phase angle read speed
from through
it while decreasing
the speed
from it through
2x. This is the
pattern effect-
ed when the SAWTOOTH
waveform is selected
in the DCO
parameter.
Read phase
angles are also
distorted
in accordance
with
the selection
of the other
DCO
parameter WAVE
FORMs,
thus making
a
variety
of
waveform
outputs possible.
The
magnitude
of the read
phase
angle distortion
corresponds
to the
momentary
value
(change over
time) of
the DCW envelope.
When
the DCW envelope
is set as shown in
Fig.
4,
an undistorted cosine
wave
is output
at point
(a),
distortion reaches
its peak
at point
©,
and
a
sawtooth
pattern
as shown
in Fig. 3 is output.
Distortion
is reduced
(modulation
become
shallower)
at point®, and
a pattern
that is somewhere
between
a cosine
wave
and a saw-tooth
wave
as illustrated
in Fig. 2 is
output.
When
WAVE FORM is set to saw-tooth.
DCW
envelope
tey ON Key OFF
POINTS
TO REMEMBER
1
)The
pattern of the read
phase angle
distortion corresponds
to the
WAVE
FORM
setting
of the DCO
parameter.
2
)The magnitude
of the read output
phase
angle distortion
(modulation
depth) cor-
responds to the
momentary
value of the
DCW envelope.
8-STEP
ENVELOPES
The CZ-3000 features
a
dual
system DCO/DCW/DCA,
and each system has
its own
indepen-
dent envelope
generator for
control of
changes in
notes, timbres
and volume over
time.
The envelope
generators
can set up
to eight
steps including setting
of
the sustain point
(the
level at which
a
note
is sustained
while a key
is depressed).
This provides
greater ver-
satility
than
the conventional ADSR
generator
and makes
sound creation
possibilities
vir*
tually unlimited.
(Fig.
1)
K«y QN
-...,'
'-!l
I
r
lV^
**£l
^\
l
i
1
*Ri
through
Rb
indicate
the RATE (slope)
of
each
various steps,
while
Li
through
L* in*
dicate
the LEVEL (des-
tination level).
Lj
is
reached
at a slope of
Rj
in STEP
l
p
L
2
is
reached at a slope of
R
2
in STEP 2, etc.
C
14
8-STEP
ENVELOPES
i

Casio CZ-3000 Specifications

General

Brand	Casio
Model	CZ-3000
Category	Synthesizer
Language	English