Yamaha CS01 Manual del usuario - Página 9
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SOUND
CREATION U/VCF
The CS01
offers
four
different
waveforms
plus a pulse
width modula-
tion feature as
shown
in
the chart
below.
Waveform
Name
Characteristics
A
Triangular
wave
Subdued
tone.
Ideal for flute
sounds.
r\
Sawtooth wave
Bright tone. Perfect for
violin
and
other
string
sounds
or
brass instru-
ment
sounds.
ru
Square
wave
"Woody"
tone.
Great
for
clarinet.
ru
Rectangular
wave
Vibrant
tone.
Trumpet,
oboe,
etc.
ru
PWM
Thick,
rich
sound.
Chorus
effect.
The
PWM
SPEED
©
and
GLISSANDO
©
controls
will
be described
in
Sound
Creation
V/Other
Functions.
All
the controls described so
far
determine
the
basic
CS01
sound.
In
order
to
fully
understand
the
operation
of
the
VCF
(described next),
return the controls to
their
Basic Settings
(refer
to the
illustration
on
the previous page).
VCF BLOCK
The
VCF
(Voltage Controlled
Filter)
alters
the tonality
of
sounds
created
by
the
VCO
by
cutting off
certain
harmonics.
CREATING THE DESIRED TONALITY
FREQ.
CUT OFF LEVER
Determines
the cut off
frequency of
the
VCF.
Level
Basic
sound
with harmonics
Cutoff
point
—
Setting
this
control
at
the
"H"
end of
its
scale
permits
all
the
upper
harmonics of
the
basic
sound
to
pass,
thereby
creating a bright tonality.
Moving
the control
towards
the
"L"
end
of
the
scale
gradually cuts off
more
and
more
upper harmonics,
creating
a
rounder,
softer tonality.
If
the
FREQ.
CUT OFF
lever
is
set
all
the
way
to
"L",
the
fundamental
may
be cut
off
and
no sound
will
be
heard.