Yamaha CS-15 Owner's Manual page 8

functions
PITCH/GLIDE
The
PITCH
block
works on
the
VCO,
controlling the pitch.
•
TUNE
is
effective
on
both
VCO
1
and
VCO
2,
and
DETUNE
on
VCO
2 onty.
©
TUNE
This
knob
adjusts the pitch.
It
controls the pitch
of both
VCO
1
and
VCO
2. If
it is
turned towards
"plus", the pitch
will rise.
If
it is
turned towards
"minus", the pitch
will
decrease.
It is
used
for tuning
the
CS-15
to
other instruments.
•
After tuning
on the
synthesizer,
the pitch
will
fluctuate for
some
time
until
the thermal
equi-
librium of the electronic circuit
is
reached.
Thus, tuning should be done
appr.
15 minutes
or
more
after
the
power
switch
was turned
ON.
®
VCO
2
DETUNE
Used
for adjusting the pitch of
VCO
2 only.
• Also used
to
obtain chorus
effects
by
changing
the
relative pitch
of the
two systems only
slightly
and
to
produce harmonic
effects
by
changing
it
by
a
factor of
3, 5, etc.
For
further
details refer
to page
20 where
"USE
OF
TWO
SYSTEMS"
is
described.
Tuning must
be
made
at
the
VCO
1
output.
The
pitch of
VCO
2
is
changed by
DETUNE.
GLIDE BLOCK:
This block
varies
the pitch
in
the attack period
when
sounds
are
being
produced by
de-
pressing of the keys.
In musical instruments, volume, tone,
and
pitch
will
be varied
during the time from
the
start
of the
sound
to
its
fading away.
The temporal
variations
of volume and
tone are generated
by
the
EG
block but
variations
of the pitch are
generated
by
the
GLIDE
circuit
®
TIME
This controls the time
until
the constant pitch
corresponding
to the intervals
of
the
keys
is
reached.
The
further
towards
L
the
knob
is
turned, the longer
is
the time.
®
VCO
1
DEPTH
This
knob
adjusts the
width of
the pitch
change
in
the attack period
of
VCO
1.
With
the
knob
set to
(click
stop position), the pitch
remains unchanged.
The
further
towards
"minus"
it is
turned, the
lower
the
initial
pitch
becomes;
the further
towards "plus
1 '
the
knob
is
turned, the higher the
initial
pitch
becomes.
®
VCO
2
DEPTH
This
knob
adjusts the
width of
the pitch
change
in
the attack
period of
VCO
2.
The
function
is
the
same
as that
of
VCO
1
DEPTH©.
©
-KEY
ON
—
TIME
—
\
/
-KEY OFF
The
product
voltage of
GLIDE
and
key
volt-
/
ages.
CONSTANT INTERVALS
i-
VCO OUTPUT
Intervals
by
the previous key.