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Yamaha CS-80 - How the Synthesizer Works; Audio Signals & Control Voltages

Yamaha CS-80
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C'»
Other Selectors & Sound Modifiers
(from Left to Right]
[18)
PITCH
-
Tunes
the
entire
keyboard.
The
outer
ring is
a
coarse
adjuitmentn
the
inrier
ring
a
fine
adjustment. Center both controls
for ^'normal" pitcih.
[6]
DETUNE CH II
-
Detunes
channel
II
sharp or
flat with rn-sptct to channel L
[16]
RING MODULATOR
-
Processes
both
channels
I ^nd II.
MODULATION
h a
cSepth of
effect
control,
SPEED
sets
the
modulation
rate. ATTACK
TIME fit DECAY TIME serve as an
atTack-r&lease
envelope for the rinq modulation speed; DEPTH
s&ts
the amount of envelope effect.
[11]
SUB
OSCILLATOR
-
Processes both channels
I
and
11. FUNCTION
jelect^
a
waveform: sine,
saw-
tooth, inverted
s-awtooth,
squaire
wavej
white
noiser
or
an externa! input. ^A line
level
^ign^l
connected
to
the
Ext In jack on the rear panel will
modulate
the
Sub
Oscillator in EXT mode). SPEED
seti
the
frequency
of
the sine, sawtooth or square wave. VCO,
VCF and
VGA are modulation depth controls
that
apply
the
Selected signal to the control inputs of their
respective
voltage controlled circuits (oscillator, filter
and/or
anriplifier}.,
[5]
I
-
FEET
-
II
-
Two
slide
switches
set
the
key-
board
range
for their
respecti^^e
channels^ ro^
I
and
II
of the
Tone
Selectors
[3]
.
Feet
refers
to
equivalent
orgjan footages,
where
8*
is
normal
pitch,
16'
an
octave
below,
5-1/3'
a perfect fifth above,
etc.
[3]
TONE SELECTOR
-
Two rows of momentary
pushbutton switches select two voices that sound
simultaneously
when you play
any
key (tfia MIX con-
trol
lAr]
^ets
the
balance
beiv*;eerk the
two voices).
Pre-
set
patches,
rmemory-programmed
patches
or panel-
programmed
patches
may
be
selected.
The
buttons
light up to show which
voices
have
been selectedr
only
one voice per row at any one time. (Preset sound
quality
depends largely
on
the
setting of the
BRILLIANCE
lever
[7].}
[4]
I
MIX
II
Assigns
tones selected in channel
1
,11
or
a combination
of
the two,
to
the
synthesizer
output:
a
balance
or blend control.
37
mm
MDDULAriQh
vet
OSCILLATOR
*—EXT
WHITE
NOISE
1
GENCRAT-DP;
rLwom
VCD -
VCF
MJiiN
M4IN
MXirsi
HiClLLATOAS
FlLT£rL5 AMPLIFIERS
Sub O^iN^tOr Bloelt
Di^gr^rrt
ir
5ft-
^
i^
i
liiilMil
Sat PITCH & FEET
as Bhawfi fQir true tniddle
"C"
Middle G
16- -
1 aclJVK t-rHjw
Middle
C
B-
-
MiiWic C
^-
-
t adave
4Mvie
Middle
C etL.
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Vqu hear both CH
I*
CH II mixed.
You
haar CH I
onlv-
Yqu he^rCH II only.

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